Dr. Upendra Sharma
My Social Links

Dr. Upendra Sharma

Principal Scientist
CSIR-Institute of Himalayan Bioresource Technology, India


Highest Degree
PostDoc Fellow in Kinetics and Catalysis from IIT Bombay, India

Share this Profile

Biography

Upendra Sharma obtained his Ph.D. in Organic Chemistry from Guru Nanak Dev University, Amritsar, India. His main area of interest is related to Catalysis and Natural Product Chemistry. Till date, he has published over 158 research articles in journals of international repute.

Area of Interest:

Chemistry
100%
Catalysis
62%
Natural Product Chemistry
90%
Medicinal Chemistry
75%
Spectroscopy
55%

Research Publications in Numbers

Books
0
Chapters
0
Articles
0
Abstracts
0

Selected Publications

  1. Suresh, P.S., P.P. Singh, M. Sharma and U. Sharma, 2023. Multicomponent natural deep eutectic solvents: Super solvents for the efficient extraction of steviol glycosides (rebaudioside A) from Stevia rebaudiana. J. Cleaner Prod. Vol 385. 10.1016/j.jclepro.2022.135639.
    CrossRef  |  Direct Link  |  
  2. Thakur, A., Manisha, I. Kumar and U. Sharma, 2022. Visible light‐induced functionalization of c−h bonds: opening of new avenues in organic synthesis. Asian J. Organic. Chemis. Vol. 11. 10.1002/ajoc.202100804.
    CrossRef  |  Direct Link  |  
  3. Suresh, P.S., S.S. Gupta, Anmol and U. Sharma, 2022. Insight into coronaviruses and natural products-based approach for COVID-19 treatment. In: Studies in Natural Products Chemistry, Atta-ur-Rahman Elsevier U.S pp: 443-469.
    CrossRef  |  Direct Link  |  
  4. Suresh, P.S., P.P. Singh, Anmol, S. Kapoor, Y.S. Padwad and U. Sharma, 2022. Lactic acid-based deep eutectic solvent: An efficient green media for the selective extraction of steroidal saponins from Trillium govanianum, Sep. Purifi. Technol. Vol. 294. 10.1016/j.seppur.2022.121105.
    CrossRef  |  Direct Link  |  
  5. Singh, P.P., R. Joshi, R. Kumar, A. Kumar and U. Sharma, 2022. Comparative phytochemical analysis of Ferula assa-foetida with Ferula jaeschkeana and commercial oleo-gum resins using GC-MS and UHPLC-PDA-QTOF-IMS. Food Res. Int. Vol. 164. 10.1016/j.foodres.2022.112434.
    CrossRef  |  Direct Link  |  
  6. Parmar, D., A.K. Dhiman, R. Kumar, A.K. Sharma and U. Sharma, 2022. CP*co(iii)-catalyzed selective c8-olefination and oxyarylation of quinoline n-oxides with terminal alkynes. J. Org. Chem., 87: 9069-9087.
    CrossRef  |  Direct Link  |  
  7. Parmar, D. and U. Sharma, 2022. Manganese‐Catalyzed Regioselective C-H Allylation, Allenylation, Halogenation, Dehydrogenative Annulation, and Amidation. In: Handbook of CH-Functionalization, Maiti, D., (Ed.), Wiley‐VCH GmbH., 39.
    CrossRef  |  Direct Link  |  
  8. Manisha and U. Sharma, 2022. Rhodium‐ and Iridium‐Catalyzed Benzylic C-H Functionalization. In: Handbook of CH-Functionalization, Maiti, D., (Ed.), Wiley‐VCH GmbH., pp: 1-36.
    CrossRef  |  Direct Link  |  
  9. Kumari, S., S.K. Dolma, Anmol, U. Sharma and S.G.E. Reddy, 2022. Insecticidal Activity of Extracts, Fractions, and Pure Molecules of Cissampelos pareira Linnaeus against Aphid, Aphis craccivora Koch. Molecules,Vol. 27. 10.3390/molecules27030633.
    CrossRef  |  Direct Link  |  
  10. Kumari, S., Anmol and U. Sharma, 2022. A cularine-type isoquinoline alkaloid from the root part of Cissampelos pareira. Nat. Prod. Res., 10.1080/14786419.2022.2126469.
    CrossRef  |  Direct Link  |  
  11. Kumar, S., Anmol, U. Sharma and S.G.E. Reddy, 2022. Insecticidal potential of extracts, fractions, and molecules ofAconitum heterophyllumWall ex. Royle against aphidAphis craccivoraKoch (Hemiptera: Aphididae). Pest. Manage. Sci., 10.1002/ps.7324.
    CrossRef  |  Direct Link  |  
  12. Kumar, R., D. Parmar, D. Chandra, Sarthi and U. Sharma, 2022. Regioselective C(sp3)–H amidation of 8-methylquinolines with N-hydroxyphthalimides. Chem. Commun., 58: 13151-13154.
    CrossRef  |  Direct Link  |  
  13. Kumar, R., D. Chandra and U. Sharma, 2022. Pd‐catalyzed atropselective c−h olefination promoted by a transient directing group. Adv. Synth. Catal. 364: 897-908.
    CrossRef  |  Direct Link  |  
  14. Kumar, A., S. Kaur, S. Dhiman, P.P. Singh, G. Bhatia and S. Thakuret al., 2022. Targeting akt/nf-κb/p53 pathway and apoptosis inducing potential of 1,2-benzenedicarboxylic acid, bis (2-methyl propyl) ester isolated from onosma bracteata wall. against human osteosarcoma (mg-63) cells. Molecules,Vol. 27. 10.3390/molecules27113478.
    CrossRef  |  Direct Link  |  
  15. Gupta, S.S., D. Parmar, R. Kumar, D. Chandra and U. Sharma, 2022. Construction of N-heterocycles through group 9 (Co, Rh, Ir) metal-catalyzed C-H activation: utilizing alkynes and olefins as coupling partners. Catal. Rev., 10.1080/01614940.2022.2097640.
    CrossRef  |  Direct Link  |  
  16. Goel, N. and N. Kumar, 2022. Pharmaceutical Applications of Supramolecules. 1st Edn., Springer International Publishing, New York City, ISBN: 978-3-031-21900-9, Pages: 328.
    CrossRef  |  Direct Link  |  
  17. Dhiman, A.K. and U. Sharma, 2022. Rhodium‐Catalyzed C-H Halogenation. In: Handbook of CH-Functionalization, Maiti, D., (Ed.), Wiley‐VCH GmbH., pages: 25.
    CrossRef  |  Direct Link  |  
  18. Chandra, D., Manisha and U. Sharma, 2022. Recent advances in the high‐valent cobalt‐catalyzed c−h functionalization ofn‐heterocycles. Chemical. Record. Vol. 22. 10.1002/tcr.202100271.
    CrossRef  |  Direct Link  |  
  19. Anmol, S. Kumari, R. Kumar, R. Singh, G. Aggarwal, P. Agrawal, D. Sahal and U. Sharma, 2022. Antiplasmodial diterpenoid alkaloid from Aconitum heterophyllum Wall. ex Royle: Isolation, characterization, and UHPLC-DAD based quantification. J. Ethnopharmacol. Vol. 287. 10.1016/j.jep.2021.114931.
    CrossRef  |  Direct Link  |  
  20. Thakur, A., A.K. Dhiman, Sumit, R. Kumar and U. Sharma, 2021. Rh(III)-catalyzed regioselective C8-alkylation of quinoline N-oxides with maleimides and acrylates. J. Org. Chem., 10.1021/acs.joc.1c00393.
    CrossRef  |  Direct Link  |  
  21. Suresh, P.S., V. Bhatt, P.P. Singh and U. Sharma, 2021. Steroidal sapogenins from genus Trillium: Chemistry, synthesis, and opportunities in neuro-active steroids designing. In: Studies in Natural Products Chemistry, Rahman, A.U., Elsevier, Amsterdam, Netherlands, ISBN-13 9780128194850, pp" 67-95.
    CrossRef  |  Direct Link  |  
  22. Suresh, P.S., P.P. Singh, Y.S. Padwad and U. Sharma, 2021. Steroidal saponins from Trillium govanianum as ?-amylase, ?-glucosidase, and dipeptidyl peptidase IV inhibitory agents. J. Pharm. Pharmacol., 73: 487-495.
    CrossRef  |  Direct Link  |  
  23. Suresh, P.S., P.P. Singh, A. Sharma, Y.S. Padwad and U. Sharma, 2021. Steroidal saponins of Trillium govanianum: Quality control, pharmacokinetic analysis, and anti-inflammatory activity. Biocatal. Agric. Biotechnol., Vol. 35. 10.1016/j.bcab.2021.102071.
    CrossRef  |  Direct Link  |  
  24. Suresh, P.S., K.G. Thakur and U. Sharma, 2021. Molecular docking and dynamic simulation approach to decipher steroidal sapogenins (genus Trillium) derived agonists for glucocorticoid receptor. J. Biomol. Struct. Dyn., 41: 55-66.
    CrossRef  |  Direct Link  |  
  25. Sumit, D. Chandra, A. Thakur, A.K. Dhiman and U. Sharma, 2021. Cp*Rh(III)-catalyzed regioselective C(sp3)–H electrophilic trifluoromethylthiolation of 8-methylquinolines. J. Org. Chem., 86: 13754-13761.
    CrossRef  |  Direct Link  |  
  26. Sumit, , D. Chandra and U. Sharma, 2021. Merging kinetic resolution with C–H activation: an efficient approach for enantioselective synthesis. Org. Biomol. Chem., 10.1039/d1ob00232e.
    CrossRef  |  Direct Link  |  
  27. Sharma, U., A.K. Dhiman and R. Kumar, 2021. Catalyst- and additive-free synthesis of fluoroalkoxyquinolines. Synthesis, 53: 4124-4130.
    CrossRef  |  Direct Link  |  
  28. Manisha, S.S. Gupta, A.K. Dhiman and U. Sharma, 2021. Rh(III)‐catalyzed selective C7 halogenation of indolines. Eur. J. Org. Chem., 2021: 5443-5448.
    CrossRef  |  Direct Link  |  
  29. Kumari, S., Anmol, V. Bhatt, P.S. Suresh and U. Sharma, 2021. Cissampelos pareira L.: A review of its traditional uses, phytochemistry, and pharmacology. J. Ethnopharmacol., Vol. 274. 10.1016/j.jep.2021.113850.
    CrossRef  |  Direct Link  |  
  30. Kumar, I., R. Kumar, S.S. Gupta, and U. Sharma, 2021. C70 fullerene catalyzed photoinduced aerobic oxidation of benzylamines to imines and aldehydes. J. Org. Chem., 10.1021/acs.joc.1c00297.
    CrossRef  |  Direct Link  |  
  31. Kumar, I., A. Thakur, Manisha and U. Sharma, 2021. α-Oxygenation of N-aryl/alkyl heterocyclic compounds via ruthenium photocatalysis. React. Chem. Eng., 6: 2087-2091.
    CrossRef  |  Direct Link  |  
  32. Haider, M., D. Dholakia, A. Panwar, P. Garg and A. Gheware et al., 2021. Transcriptome analysis and connectivity mapping of Cissampelos pareira L. provides molecular links of ESR1 modulation to viral inhibition. Sci. Rep., Vol. 11. 10.1038/s41598-021-99444-0.
    CrossRef  |  Direct Link  |  
  33. Gupta, S.S., Manisha, R. Kumar, A.K. Dhiman and U. Sharma, 2021. Predictable site-selective functionalization: Promoter group assisted para-halogenation of N-substituted (hetero)aromatics under metal-free condition. Org. Biomol. Chem., 19: 9675-9687.
    CrossRef  |  Direct Link  |  
  34. Gupta, S.S., A. Kumar, R. Shankar and U. Sharma, 2021. In silico approach for identifying natural lead molecules against SARS-COV-2. J. Mol. Graphics Modell., Vol. 106. 10.1016/j.jmgm.2021.107916.
    CrossRef  |  Direct Link  |  
  35. Chandra, D., N. Kumar, Sumit, D. Parmar, P. Gupta and U. Sharma, 2021. Co(iii)-catalysed regioselective linear C(8)–H olefination of isoquinolone with terminal aromatic and aliphatic alkynes. Chem. Commun., 57: 11613-11616.
    CrossRef  |  Direct Link  |  
  36. Bora, P.S., P.S. Suresh, S. Kumari, Anmol, S. Puri and U. Sharma, 2021. Integrated Approach for the Quality Assurance of Commercially Important Himalayan Medicinal Plants. In: Medicinal Plants, H.M. Ekiert, K.G. Ramawat and J. Arora, Springer International Publishing Singapore, PP: 721–768.
    CrossRef  |  Direct Link  |  
  37. Singh, P.P., P.S. Suresh, P.S. Bora, V. Bhatt and U. Sharma, 2020. Govanoside B, a new steroidal saponin from rhizomes of Trillium govanianum. Nat. Prod. Res., 10.1080/14786419.2020.1761360.
    CrossRef  |  Direct Link  |  
  38. Puri, S., S. Sharma, A. Kumari, M. Sharma, U. Sharma and S. Kumar, 2020. Extraction of lignocellulosic constituents from cow dung: preparation and characterisation of nanocellulose. Biomass Convers. Biorefin., 10.1007/s13399-020-01119-9.
    CrossRef  |  Direct Link  |  
  39. Parmar D., R. Kumar, R. Kumar and U. Sharma, 2020. Ru(ii)-catalyzed chemoselective c(sp3)–h monoarylation of 8-methyl quinolines with arylboronic acids. The Journal of Organic Chemistry 85: 11844-11855.
    CrossRef  |  Direct Link  |  
  40. Kumar, I., S.S. Gupta, R. Kumar, R. Kumar, P. Agrawal, D. Sahal and U. Sharma, 2020. Photocatalytic unsymmetrical coupling of 2-substituted quinolines: synthesis and evaluation of the antiplasmodial potential of u03b2-norbenzomorphan frameworks. ACS Sustainable Chem. Eng., 8: 12902-12910.
    CrossRef  |  Direct Link  |  
  41. Kirti D.S., P.S. Suresh, P.P. Singh, U. Sharma and S.G.E. Reddy, 2020. Insecticidal activity of the extract, fractions, and pure steroidal saponins of trillium govanianum wall. ex d. don for the control of diamondback moth (plutella xylostella l.) and aphid (aphis craccivora koch). Pest Management Science 10.1002/ps.6107 http://dx.doi.org/10.1002/ps.6107.
    CrossRef  |  
  42. Kaur, S., A. Kumar, S. Thakur, K. Kumar and R. Sharma et al., 2020. Antioxidant, antiproliferative and apoptosis-inducing efficacy of fractions from Cassia fistula L. leaves. Antioxidants, 10.3390/antiox9020173.
    CrossRef  |  Direct Link  |  
  43. Gupta, S.S., S. Kumari, I. Kumar and U. Sharma, 2020. Eco-friendly and sustainable synthetic approaches to biologically significant fused n-heterocycles. Chem. Heterocyci. Compd., 56: 433-444.
    CrossRef  |  Direct Link  |  
  44. Dhiman, A.K., A. Thakur, I. Kumar, R. Kumar and U. Sharma, 2020. Co(iii)-catalyzed C-H amidation of nitrogen-containing heterocycles with dioxazolones under mild conditions. J. Org. Chem., 85: 9244-9254.
    CrossRef  |  Direct Link  |  
  45. Dhiman A.K., A. Thakur, R. Kumar and U. Sharma, 2020. Rhodium‐catalyzed selective c−h bond functionalization of quinolines. Asian Journal of Organic Chemistry 10.1002/ajoc.202000341 http://dx.doi.org/10.1002/ajoc.202000341.
    CrossRef  |  
  46. Chandra, D., A.K. Dhiman, D. Parmar and U. Sharma, 2020. Alkylation, alkenylation, and alkynylation of heterocyclic compounds through group 9 (Co, Rh, Ir) metal-catalyzed C-H activation. Catalysis Rev., 10.1080/01614940.2020.1839849.
    CrossRef  |  Direct Link  |  
  47. Bhatt, V., S. Kumari, P. Upadhyay, P. Agrawal, Anmol, D. Sahal and U. Sharma, 2020. Chemical profiling and quantification of potential active constituents responsible for the antiplasmodial activity of Cissampelos pareira. J. Ethnopharmacol., 10.1016/j.jep.2020.113185.
    CrossRef  |  Direct Link  |  
  48. Thakur, M., S. Sharma, U. Sharma and R. Kumar, 2019. Study on effect of pruning time on growth, yield and quality of scented rose (Rosa damascena Mill.) varieties under acidic conditions of western Himalayas. J. Applied Res. Med. Aromat. Plants. 10.1016/j.jarmap.2019.100202.
    CrossRef  |  Direct Link  |  
  49. Sharma, R., R. Kumar and U. Sharma, 2019. Rh/O2-catalyzed C8 olefination of quinoline N-oxides with activated and unactivated olefins. J. Org. Chem., 84: 2786-2797.
    CrossRef  |  PubMed  |  
  50. Kumar, R., R. Sharma, R. Kumar and U. Sharma, 2019. Cp*Rh(III)-catalyzed regioselective c(sp3)-h methylation of 8-methylquinolines with organoborons. Org. Lett., 22: 305-309.
    CrossRef  |  Direct Link  |  
  51. Kumar, R., R. Kumar, D. Parmar, S.S. Gupta and U. Sharma, 2019. Ru(II)/Rh(III)-catalyzed c(sp3)-c(sp3) bond formation through C(sp3)-h activation: selective linear alkylation of 8-methylquinolines and ketoximes with olefins. J. Org. Chem., 85: 1181-1192.
    CrossRef  |  Direct Link  |  
  52. Kumar, R., R. Kumar, D. Chandra and U. Sharma, 2019. Cp*CoIII–catalyzed alkylation of primary and secondary C(sp3)-H bonds of 8-alkylquinolines with maleimides. J. Org. Chem., 84: 1542-1552.
    CrossRef  |  Direct Link  |  
  53. Katoch, D., D. Kumar, Y.S. Padwad, B. Singh and U. Sharma, 2019. Pseudolycorine N-oxide, a new N-oxide from Narcissus tazetta. Nat. Prod. Res. 10.1080/14786419.2019.1574785.
    CrossRef  |  Direct Link  |  
  54. Katoch, D., D. Kumar, Y.S. Padwad, B. Singh and U. Sharma, 2019. Narciclasine-4-O-β-D-xylopyranoside, a new narciclasine glycoside from Zephyranthes minuta. Nat. Prod. Res. 10.1080/14786419.2018.1527836.
    CrossRef  |  Direct Link  |  
  55. Katoch, D. and U. Sharma, 2019. Simultaneous quantification and identification of Amaryllidaceae alkaloids in Narcissus tazetta by ultra performance liquid chromatography-diode array detector-electrospray ionisation tandem mass spectrometry. J. Pharm. Biomed. Anal., Vol. 175. 10.1016/j.jpba.2019.06.047.
    CrossRef  |  Direct Link  |  
  56. Gupta, S.S., R. Kumar and U. Sharma, 2019. Regioselective arylation of quinoline n-oxides (C8), indolines (C7) and n-tert-butylbenzamide with arylboronic acids. ACS Omega, 5: 904-913.
    CrossRef  |  Direct Link  |  
  57. Dhiman, A.K., D. Chandra, R. Kumar and U. Sharma, 2019. Catalyst-free synthesis of 2-anilinoquinolines and 3-hydroxyquinolines via three-component reaction of quinoline N-oxides, aryldiazonium salts and acetonitrile. J. Org. Chem., 84: 6962-6969.
    CrossRef  |  Direct Link  |  
  58. Chandra, D., A.K. Dhiman, R. Kumar and U. Sharma, 2019. Microwave‐assisted metal‐free rapid synthesis of C4‐arylated quinolines via povarov type multicomponent reaction. Eur. J. Org. Chem., 2019: 2753-2758.
    CrossRef  |  Direct Link  |  
  59. Dhiman, A.K., S.S. Gupta, R. Sharma, R. Kumar and U. Sharma, 2019. Rh(III)-Catalyzed C (8)-H activation of quinoline N-oxides: Regioselective C-Br and C-N bond formation. J. Organ. Chem. 10.1021/acs.joc.9b01538.
    CrossRef  |  Direct Link  |  
  60. Sharma, S., V. Patial, D. Singh, U. Sharma and D. Kumar, 2018. Antimicrobial homoisoflavonoids from the rhizomes of Polygonatum verticillatum. Chem. Biodivers., Vol. 15. 10.1002/cbdv.201800430.
    CrossRef  |  Direct Link  |  
  61. Sharma, R., R. Kumar, R. Kumar, P. Upadhyay, D. Sahal and U. Sharma, 2018. Rh(III)-catalyzed C(8)–H functionalization of quinolines via simultaneous C–C and C–O bond formation: Direct synthesis of quinoline derivatives with antiplasmodial potential. J. Org. Chem., 83: 12702-12710.
    CrossRef  |  Direct Link  |  
  62. Sharma, R., R. Jandrotia, B. Singh, U. Sharma and D. Kumar, 2018. Comprehensive metabolomics study of traditionally important Rumex species found in western Himalayan region. Nat. Prod. Commun., 13: 189-194.
    CrossRef  |  Direct Link  |  
  63. Sharma, R. and U. Sharma, 2018. Remote C-H bond activation/transformations: A continuous growing synthetic tool; Part II Catal. Rev. Sci. Eng., 60: 497-565.
    CrossRef  |  Direct Link  |  
  64. Kumar, R., S. Chaudhary, R. Kumar, P. Upadhyay, D. Sahal and U. Sharma, 2018. Catalyst and additive-free diastereoselective 1,3-dipolar cycloaddition of quinolinium imides with olefins, maleimides and benzynes: Direct access to fused N,N′-heterocycles with promising activity against a drug-resistant malaria parasite. J. Org. Chem., 83: 11552-11570.
    CrossRef  |  Direct Link  |  
  65. Kumar, R., R. Sharma, I. Kumar, P. Upadhyayand A.K. Dhiman et al., 2018. Evaluation of antiplasmodial potential of C-2 and C-8 modified quinolines: In vitro and in silico study. Med. Chem. 10.2174/1573406414666181015144413.
    CrossRef  |  Direct Link  |  
  66. Kumar, M., K. Thakur, S. Sharma, O.S. Nayal, N. Kumar, B. Singh and U. Sharma, 2018. Solvent‐free, l‐leucine‐catalyzed direct dehydrative esterification of carboxylic acids with alcohols: Direct synthesis of 3‐alkoxy 1(3 H)‐isobenzofuranone. Asian J. Org. Chem., 7: 227-231.
    CrossRef  |  Direct Link  |  
  67. Kumar, I., R. Sharma, R. Kumar, R. Kumar and U. Sharma, 2018. C70 fullerene‐catalyzed metal‐free photocatalytic ipso‐hydroxylation of aryl boronic acids: Synthesis of phenols. Adv. Synth. Catal., 360: 2013-2019.
    CrossRef  |  Direct Link  |  
  68. Kumar, I., R. Kumar and U. Sharma, 2018. Recent advances in the regioselective synthesis of indoles via C–H activation/functionalization. Synthesis, 50: 2655-2677.
    CrossRef  |  Direct Link  |  
  69. Kumar, D., P. Kumar and U. Sharma, 2018. UPLC-DAD-MS based quality control and discrimination analysis of different aerial parts of Crataegus rhipidophylla gand. Found in Indian Western Himalaya. Anal. Chem. Lett., 8: 177-187.
    CrossRef  |  Direct Link  |  
  70. Kumar, D. and U. Sharma, 2018. High-performance thin-layer chromatography: An economical alternative for the quality control of medicinal plants and derived products. Sep. Sci. Plus, 1: 100-134.
    CrossRef  |  Direct Link  |  
  71. Chaudhary, A., S. Choudhary, U. Sharma, A.P. Vig, B. Singh and S. Arora, 2018. Purple head broccoli (Brassica oleracea L. var. italica Plenck), a functional food crop for antioxidant and anticancer potential. J. Food Sci. Technol., 55: 1806-1815.
    CrossRef  |  Direct Link  |  
  72. Bhatt, V., N. Kumar, U. Sharma and B. Singh, 2018. Comprehensive metabolic profiling of Zanthoxylum armatum and Zanthoxylum acanthopodium leaves, bark, flowers and fruits using Ultra high performance liquid chromatography. Sep. Sci. Plus, 1: 311-324.
    CrossRef  |  Direct Link  |  
  73. Sharma, S., V. Bhatt, N. Kumar, B. Singh and U. Sharma, 2017. Locational comparison of essential oils from selected conifers of Himachal Pradesh. Nat. Prod. Res., 31: 1578-1582.
    CrossRef  |  Direct Link  |  
  74. Sharma, R., I. Kumar, R. Kumar and U. Sharma, 2017. Rhodium-catalyzed remote (C-8) alkylation of quinolines with activated and unactivated olefins: Mechanistic study and total synthesis of EP4 agonist. Adv. Synth. Catal., 359: 3022-3028.
    CrossRef  |  Direct Link  |  
  75. Sharma, A., R. Sharma, R. Arora, S. Arora, B. Singh and U. Sharma, 2017. Quantitative and Qualitative analysis of Eruca sativa and Brassica juncea seeds by UPLC-DAD and UPLC-ESI-QTOF. Nat. Prod. Commun., 12: 1485-1489.
    CrossRef  |  Direct Link  |  
  76. Rattan, R., B.I. Fozdar, V. Gautam, R. Sharma, D. Kumar and U. Sharma, 2017. Cuspidate A, new anti-fungal triterpenoid saponin from Lepidagathis cuspidata. Nat. Prod. Res., 31: 773-779.
    CrossRef  |  Direct Link  |  
  77. Kumar, R., R. Kumar, A.K. Dhiman and U. Sharma, 2017. Regioselective Metal‐free C2− H arylation of quinoline N‐oxides with aryldiazonium salts/anilines under ambient conditions. Asian J. Org. Chem., 6: 1043-1053.
    CrossRef  |  Direct Link  |  
  78. Kumar, M., V. Bhatt, O.S. Nayal, S. Sharma and V. Kumar et al., 2017. CuI nanoparticles as recyclable heterogeneous catalysts for C-N bond formation reactions. Catal. Sci. Technol., 7: 2857-2864.
    CrossRef  |  Direct Link  |  
  79. Kumar, M., S. Sharma, K. Thakur, O.S. Nayal and V. Bhatt et al., 2017. Montmorillonite‐K10‐catalyzed microwave‐assisted direct amidation of unactivated carboxylic acids with amines: Maintaining chiral integrity of substrates. Asian J. Org. Chem., 6: 342-346.
    CrossRef  |  Direct Link  |  
  80. Dhiman, A.K., R. Kumar, R. Kumar and U. Sharma, 2017. Metal-free synthesis of 2- substituted-3-(2-hydroxyaryl)quinolines and 4-(2-hydroxyaryl)acridines via benzyne chemistry. J. Org. Chem., 82: 12307-12317.
    CrossRef  |  Direct Link  |  
  81. Chandel, M., M. Kumara, U. Sharma, B. Singh and S. Kaur, 2017. Antioxidant, antigenotoxic and cytotoxic activity of Anthocephalus cadamba (Roxb.) Miq. bark fractions and their phytochemical analysis using UPLC-ESI-QTOF-MS Comb. Chem. High Throughput Screening, 20: 760-772.
    CrossRef  |  Direct Link  |  
  82. Chandel, M., M. Kumar, U. Sharma, B. Singh and S. Kaur, 2017. Investigations on Antioxidant, Antiproliferative and COX‐2 Inhibitory Potential of Alkaloids from Anthocephalus cadamba (Roxb.) Miq. leaves. Chem. Biodivers., Vol. 14. 10.1002/cbdv.201600376.
    CrossRef  |  Direct Link  |  
  83. Bhatta, V., S. Sharmaa, N. Kumar, U. Sharma and B. Singh, 2017. Simultaneous quantification and identification of flavonoids, lignans, coumarin and amides in leaves of Zanthoxylum armatum using UPLC-DAD-ESI-QTOF–MS/MS. J. Pharm. Biomed. Anal., 132: 46-55.
    CrossRef  |  Direct Link  |  
  84. Bhatt, V., S. Sharma, N. Kumar, U. Sharma and B. Singh, 2017. Chemical composition of essential oil among seven populations of Zanthoxylum armatum from Himachal Pradesh: Chemotypic and seasonal variation. Nat. Prod. Commun., 12: 1643-1646.
    CrossRef  |  Direct Link  |  
  85. Sharma, S., M. Kumar, V. Bhatt, O.S. Nayal and M.S. Thakur et al., 2016. Vasicine from Adhatoda vasica as an organocatalyst for metal-free Henry reaction and reductive heterocyclization of o-nitroacylbenzenes. Tetrahedron Lett., 45: 5003-5008.
    CrossRef  |  Direct Link  |  
  86. Sharma, S., M. Kumar, S. Sharma, O.S. Nayal, N. Kumar, B. Singh and U. Sharma, 2016. Microwave assisted synthesis of phenanthridinones and dihydrophenanthridines by vasicine/KOtBu promoted intramolecular C–H arylation. Org. Biomol. Chem., 14: 8536-8544.
    CrossRef  |  Direct Link  |  
  87. Sharma, S., M. Kumar, O.S. Nayal, M.S. Thakur and V. Bhatt et al., 2016. Designing vasicine‐derived ligands and their application for ruthenium‐catalyzed transfer hydrogenation reactions in water: Synthesis of amines and alcohols. Asian J. Org. Chem., 5: 1471-1479.
    CrossRef  |  Direct Link  |  
  88. Rattan, R., A. Kumari, V. Gautam, B.I. Fozdar, U. Sharma and D. Kumar, 2016. Preliminary phytochemical screening, antioxidant and antifungal activity of Lepidagathis cuspidate. Int. J. Drug Dev. Res., 8: 001-003.
    Direct Link  |  
  89. Nayal, O.S., M.S. Thakur, V. Bhatt, M. Kumar, N. Kumar, B. Singh and U. Sharma, 2016. Synthesis of tertiary arylamines: Lewis acid-catalyzed direct reductive N-alkylation of secondary amines with ketones through an alternative pathway. Chem. Commun., 52: 9648-9651.
    Direct Link  |  
  90. Kumar, R., I. Kumar, R. Sharma and U. Sharma, 2016. Catalyst and solvent-free alkylation of quinoline N-oxides with olefins: A direct access to quinoline-substituted α-hydroxy carboxylic derivatives. Org. Biomol. Chem., 14: 2613-2617.
    Direct Link  |  
  91. Kumar, D., A. Gulati and U. Sharma, 2016. Determination of Theanine and Catechin in Camellia sinensis (Kangra Tea) Leaves by HPTLC and NMR Techniques. Food Anal. Methods, 9: 1666-1674.
    CrossRef  |  Direct Link  |  
  92. Chaudhary, A., S. Choudhary, U. Sharma and S. Arora, 2016. In vitro evaluation of Brassica sprouts for its antioxidant and antiproliferative potential. Indian J. Pharm. Sci., 78: 615-623.
    CrossRef  |  Direct Link  |  
  93. Chandel, M., M. Kumar, U. Sharma, N. Kumar, B. Singh and S. Kaur, 2016. Isolation and characterization of flavanols from Anthocephalus cadamba and evaluation of their antioxidant, antigenotoxic, cytotoxic and COX-2 inhibitory activities. Braz. J. Pharmacogn., 26: 474-483.
    CrossRef  |  Direct Link  |  
  94. Sharma, U., R. Kancherla, T. Naveen, S. Agasti and D. Maiti, 2015. Palladium-catalyzed annulation of diarylamines with olefins through C–H activation: Direct access to N-arylindoles. Angewandte Chem. Int. Edn., 53: 11895-11899.
    CrossRef  |  Direct Link  |  
  95. Sharma, R., R. Kumar, I. Kumar, B. Singh and U. Sharma, 2015. Selective C–Si bond formation through C–H functionalization. Synthesis, 47: 2347-2366.
    CrossRef  |  Direct Link  |  
  96. Sharma, R., R. Kumar, I. Kumar and U. Sharma, 2015. RhIII‐catalyzed dehydrogenative coupling of quinoline N‐oxides with alkenes: N‐oxide as traceless directing group for remote C–H activation. Eur. J. Org. Chem., 2015: 7519-7528.
    CrossRef  |  Direct Link  |  
  97. Sharma, R., K. Thakur, R. Kumar, I. Kumar and U. Sharma, 2015. Distant C-H activation/functionalization: A new horizon of selectivity beyond proximity. Catal. Rev.: Sci. Eng., 57: 345-405.
    CrossRef  |  Direct Link  |  
  98. Sharma, R., K. Thakur and U. Sharma, 2015. Olefins as unprecedented feedstock for the synthesis of valuable heterocycles: Regioselectivity remains an issue. Synlett, 26: 137-141.
    CrossRef  |  Direct Link  |  
  99. Rattan, R., S.G.E. Reddy, S.K. Dolma, B.I. Fozdar, V. Gautam, R. Sharma and U. Sharma, 2015. Triterpenoid saponins from Clematis graveolens and evaluation of their insecticidal activities. Nat. Prod. Commun., 10: 1525-1528.
    CrossRef  |  Direct Link  |  
  100. Agasti, S., U. Sharma, T. Naveen and D. Maiti, 2015. Orthogonal selectivity with cinnamic acids in 3-substituted benzofuran synthesis through C–H olefination of phenols. Chem. Commun., 51: 5375-5378.
    Direct Link  |  
  101. Walia, M., U. Sharma, V.K. Agnihotri and B. Singh., 2014. Silica-supported boric acid assisted conversion of mono- and poly-saccharides to 5-hydroxymethylfurfural in ionic liquid. RSC Adv., 4: 14414-14418.
    CrossRef  |  Direct Link  |  
  102. Verma, P.K., M. Bala, K. Thakur, U. Sharma and N. Kumar et al., 2014. Iron and palladium(II) phthalocyanines as recyclable catalysts for reduction of nitroarenes. Catal. Lett., 144: 1258-1267.
    CrossRef  |  Direct Link  |  
  103. Sharma, U., Y. Park and S. Chang, 2014. Rh(III)-catalyzed traceless coupling of quinoline N-oxides with internal diarylalkynes. J. Org. Chem., 79: 9899-9906.
    CrossRef  |  PubMed  |  Direct Link  |  
  104. Sharma, U., R. Kancherla, T. Naveen, S. Agasti and D. Maiti, 2014. Palladium-catalyzed annulation of diarylamines with olefins through C-H activation: direct access to N-arylindoles. Angew. Chem. Int. Ed., 53: 11895-11899.
    CrossRef  |  PubMed  |  Direct Link  |  
  105. Sharma, U., A. Modak, S. Maity, A. Maji and D. Maiti, 2014. Direct arylation via C–H activation. In: New Trends in Cross-Coupling: Theory and Applications, Colacot, T., Royal Society of Chemistry, United Kingdom, ISBN-13 978-1-84973-896-5, pp: 551-609.
    CrossRef  |  Direct Link  |  
  106. Sharma, U., A. Modak, S. Maity, A. Maji and D. Maiti, 2014. Direct Arylation via C-H Activation. In: New Trends in Cross-Coupling: Theory and Applications, CoIacot, T. (Ed.)., RSC Publishing, New York, ISBN: 978-1-84973-896-5, pp: 551-609.
  107. Maity, S., T. Naveen, U. Sharma and D. Maiti, 2014. Efficient and stereoselective nitration of olefins with AgNO2 and TEMPO. Synlett, 25: 603-607.
    CrossRef  |  Direct Link  |  
  108. Kumar, V., U. Sharma, P. Kumar, N. Kumar and B. Singh, 2014. Silica-supported boric acid catalyzed synthesis of dihydropyrimidin-2-ones, Bis(indolyl)methanes, Esters and Amides. Indian J. Chem. Sect. B, 53: 83-89.
    Direct Link  |  
  109. Chaudhary, A., U. Sharma, A.P. Vig, B. Singh and S. Arora, 2014. Free radical scavenging, antiproliferative activities and profiling of variations in the level of phytochemicals in different parts of broccoli (Brassica oleracea italica). Food Chem., 148: 373-380.
    CrossRef  |  PubMed  |  Direct Link  |  
  110. Walia, M., U. Sharma, S. Bhushan, N. Kumar and B. Singh, 2013. Arabinan-type polysaccharides from industrial apple pomace waste. Chem. Nat. Compd., 49: 794-798.
    CrossRef  |  Direct Link  |  
  111. Verma, P.K., U. Sharma, M. Bala, N. Kumar and B. Singh, 2013. Transition metal-free 1,3-dimethylimidazolium hydrogen carbonate catalyzed hydration of organonitriles to amides. RSC Adv., 3: 895-899.
    CrossRef  |  Direct Link  |  
  112. Verma, P.K., N. Kumar, U. Sharma, M. Bala and V. Kumar et al., 2013. Transition metal-free sodium borohydride promoted controlled hydration of nitriles to amides. Synth. Commun., 43: 2867-2875.
    CrossRef  |  Direct Link  |  
  113. Tagoti, N., S. Maiti, U. Sharma and D. Maiti, 2013. A predictably selective nitration of olefin with Fe(NO3)3 and TEMPO. J. Organic Chem., 78: 5949-5954.
    CrossRef  |  Direct Link  |  
  114. Sharma, U., N. Tagoti, A. Maji, S. Manna and D. Maiti, 2013. Palladium catalyzed synthesis of benzofurans and coumarins from phenols and olefins. Angewandte Chem. Int., 52: 12669-12673.
    CrossRef  |  Direct Link  |  
  115. Sharma, U., N. Kumar, B. Singh, R.K. Munshi and S. Bhalerao, 2013. Immunomodulatory active steroidal saponins from Asparagus racemosus. Med. Chem. Res., 22: 573-579.
    CrossRef  |  Direct Link  |  
  116. Patra, T., A. Deb, S. Manna, U. Sharma and D. Maiti, 2013. Iron-mediated decarboxylative trifluoromethylation of α,β-unsaturated carboxylic acids with trifluoromethanesulfinate. Eur. J. Organic Chem., 2013: 5247-5250.
    CrossRef  |  Direct Link  |  
  117. Nagarajan, S., S. Majumder, U. Sharma, S. Rajendran, N. Kumar, S. Chatterjee and B. Singh, 2013. Synthesis and anti-angiogenic activity of benzothiazole, benzimidazole containing phthalimide derivatives. Bioorganic Med. Chem. Lett., 13: 287-290.
    CrossRef  |  PubMed  |  
  118. Maiti, S., N. Tagoti, U. Sharma and D. Maiti, 2013. Stereoselective nitration of olefins with tBuONO and TEMPO: Direct access to nitroolefins under metal-free condition. Organic Lett., 15: 3384-3387.
    Direct Link  |  
  119. Kumar, M., U. Sharma, S. Sharma, V. Kumar, B. Singh and N. Kumar, 2013. Catalyst-free water mediated reduction of nitroarenes using glucose as hydrogen source. RSC Adv., 3: 4894-4898.
    CrossRef  |  Direct Link  |  
  120. Katoch, D., D. Kumar, U. Sharma, N. Kumar, Y.S. Padwad, B. Lal and B. Singh, 2013. Zephgrabetaine: A New Betaine-type Amaryllidaceae Alkaloid from Zephyranthes grandiflora. Nat. Prod. Communi., 8: 161-164.
    PubMed  |  
  121. Chandel, M., U. Sharma, N. Kumar, B. Singh and S. Kaur, 2013. In vitro studies on the antioxidant/antigenotoxic potential of aqueous fraction from Anthocephalus cadamba Bark. In: Perspectives in cancer prevention-translational cancer research. Sudhakaran, P.R., Springer India, India, ISBN-13 978-81-322-1532-5, pp: 61-72.
    CrossRef  |  Direct Link  |  
  122. Chandel, M., U. Sharma, N. Kumar, B. Singh and S. Kaur, 2013. In vitro Studies on the Antioxidant/Antigenotoxic Potential of Aqueous Fraction from Anthocephalus cadamba Bark. In: Perspectives in Cancer Prevention-Translational Cancer Research, Sudhakaran, P.R., O.V. Oommen and M.R. Pillai (Eds.). Springer, New Delhi, ISBN 978-81-322-1532-5, pp: 61-72.
  123. Bala, M., P.K. Verma, U. Sharma, N. Kumar and B. Singh, 2013. Iron phthalocyanine as an efficient and versatile catalyst for N-alkylation of heterocyclic amines with alcohols: One-pot synthesis of 2-substituted benzimidazoles, benzothiazoles and benzoxazoles. Green Chem., 15: 1687-1693.
    CrossRef  |  Direct Link  |  
  124. Bala, M., P.K. Verma, N. Kumar, U. Sharma and B. Singh, 2013. Highly efficient iron phthalocyanine catalyzed oxidative synthesis of imines from alcohols and amines. Can. J. Chem., 91: 732-737.
    CrossRef  |  Direct Link  |  
  125. Verma, P.K., U. Sharma, N. Kumar, M. Bala and V. Kumar et al., 2012. Nickel phthalocyanine assisted highly efficient and selective carbonyl reduction in polyethylene glycol-400. Catal. Lett., 142: 907-913.
    CrossRef  |  Direct Link  |  
  126. Sharma, U., N. Kumar, P.K. Verma, V. Kumar and B. Singh, 2012. Zinc phthalocyanine with PEG-400 as a recyclable catalytic system for selective reduction of aromatic nitro compounds. Green Chem., 14: 2289-2293.
    CrossRef  |  Direct Link  |  
  127. Sharma, U., N. Kumar and B. Singh, 2012. New furostanol saponin and phenyl propanoid from roots of Asparagus racemosus. Nat. Prod. Communi., 7: 995-998.
  128. Sharma, U., M. Bala, R. Saini, P.K. Verma and N. Kumar et al., 2012. Polysaccharide enriched immunomodulatory fractions from Tinospora cordifolia (Willd) miers ax hook. f. and Thoms. Indian J. Exp. Biol., 50: 612-617.
    PubMed  |  
  129. Sharma, U., M. Bala, N. Kumar, B. Singh, R.K. Munshi and S. Bhalerao, 2012. Immunomodulatory active compounds from Tinospora cordifolia. J. Ethnopharmacol., 141: 918-926.
    CrossRef  |  PubMed  |  
  130. Kumar, V., U. Sharma, P.K. Verma, N. Kumar and B. Singh, 2012. Cobalt(II) phthalocyanine-catalyzed highly chemoselective reductive amination of carbonyl compounds in a green solvent. Adv. Synth. Catal., 354: 870-878.
    CrossRef  |  Direct Link  |  
  131. Kumar, V., U. Sharma, B. Singh and N. Kumar, 2012. Direct one-pot cobalt(ii) phthalocyanine catalyzed synthesis of N-substituted Isoindolinones. Aust. J. Chem., 65: 1594-1598.
    CrossRef  |  Direct Link  |  
  132. Kumar, V., S. Sharma, U. Sharma, B. Singh and N. Kumar, 2012. Synthesis of substituted amines and isoindolinones: catalytic reductive amination using abundantly available AlCl3/PMHS. Green Chem., 14: 3410-3414.
    CrossRef  |  Direct Link  |  
  133. Kumar, N., U. Sharma, C. Singh and B. Singh, 2012. Thalidomide: chemistry, therapeutic potential and oxidative stress induced teratogenicity. Current Top. Med. Chem., 12: 1436-1455.
    CrossRef  |  PubMed  |  Direct Link  |  
  134. Chaudhary, A., G. Rampal, U. Sharma, T.S. Thind, B. Singh, A.P. Vig and S. Arora, 2012. Anticancer, antioxidant activities and GC-MS analysis of glucosinolates in two cultivars of broccoli. Med. Chem. Drug Disc., 2: 30-37.
  135. Chandel, M., U. Sharma, N. Kumar, B. Singh and S. Kaur, 2012. Antioxidant activity and identification of bioactive compounds from leaves of Anthocephalus cadamba by ultra-performance liquid chromatography/electrospray ionization quadrupole time of flight mass spectrometry. Asian Pac. J. Trop. Med., 5: 977-985.
    CrossRef  |  PubMed  |  Direct Link  |  
  136. Sharma, U., P.K. Verma, N. Kumar, V. Kumar and M. Bala et al., 2011. Phosphane-free green protocol for selective nitro reduction with an iron-based catalyst. Chem. Eur. J., 17: 5903-5907.
    CrossRef  |  PubMed  |  Direct Link  |  
  137. Kumar, V., U. Sharma, P.K. Verma, N. Kumar and B. Singh, 2011. Silica-supported boric acid with ionic liquid: a novel recyclable catalytic system for one-pot three-component mannich reaction. Chem. Pharm. Bull., 59: 639-645.
    CrossRef  |  PubMed  |  Direct Link  |  
  138. Kaur, R., U. Sharma, B. Singh and S. Arora, 2011. Antimutagenic potential of chickrassy (Chukrasia tabularis A. Juss) bark. J. Med. Plants Res., 5: 5021-5030.
    Direct Link  |  
  139. Kaur, R., U. Sharma, B. Singh and S. Arora, 2011. Antimutagenic and antioxidant characteristics of Chukrasia tabularis A juss extracts. Int. J. Toxicol., 30: 21-34.
    CrossRef  |  PubMed  |  Direct Link  |  
  140. Sharma, U., P.K., N. Kumar, V. Kumar and B. Singh, 2010. Highly chemo- and regioselective reduction of aromatic nitro compounds catalyzed by recyclable copper(II) as well as cobalt(II) phthalocyanine. Adv. Synth. Catal., 352: 1834-1840.
    CrossRef  |  Direct Link  |  
  141. Sharma, U., P. K., N. Kumar and B. Singh, 2010. Recent developments in the chemistry of phthalimide derivatives and their role as TNF-α inhibitor. Mini Rev. Med. Chem., 10: 678-704.
  142. Sharma, U., P. Bhandari, N. Kumar and B. Singh, 2010. Simultaneous determination of ten sugars in Tinospora cordifolia by ultrasonic assisted extraction and HPLC-ELSD method. Chromatographia, 71: 633-638.
  143. Sharma, U., M. Bala, P. Kumar, G. Rampal, N. Kumar, B. Singh and S. Arora, 2010. Antimutagenic extract from Tinospora cordifolia and its chemical composition. J. Med. Plants Res., 4: 2488-2494.
  144. Sharma, U., R. Saini, N. Kumar and B. Singh, 2009. Steroidal saponins from Asparagus racemosus. Chem. Pharm. Bull., 57: 890-893.
    CrossRef  |  PubMed  |  Direct Link  |  
  145. Bala, R., R.P. Sharma, U. Sharma, A.D. Burrows and K. Cassar, 2007. Hexaamminecobalt(III) complexes as multiple hydrogen bond donors: Synthesis, characterization and X-ray structural study of mixed anion complexes [Co(NH3)6]Br2(BF4) and [Co(NH3)6]Cl2(HC2O4)•H2O. J. Mol. Struct., 832: 156-163.
    CrossRef  |  Direct Link  |  
  146. Bala, R., R.P. Sharma, U. Sharma and V. Ferretti, 2006. The first X-ray structure of a hexaamminecobalt(III) salt with two different complex chlorocadmium anions: synthesis, characterization and crystal structure of [Co(NH3)6]4 [CdCl6][CdCl4 (SCN)(H2O)] 2Cl2.2H2O. Acta Crystallogr C., 62: m628-m631.
    PubMed  |