Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Naveenkumar Kolla"'
Autor:
Manne Naga Raju, Neelam Uday Kumar, Naveenkumar Kolla, Rakeshwar Bandichhor, Peddy Vishweshwar
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 8, Pp o2190-o2190 (2011)
The title compound, C14H12N4O3S, is an intermediate of Dexlansoprazole, a proton pump inhibitor (PPI) mainly developed for anti-ulcer activity. The absolute configuration of the title compound was determined as R. The crystal structure reveals that t
Externí odkaz:
https://doaj.org/article/9d2f1d926a0b4ff8bc7b270a45b39406
Autor:
Naveenkumar Kolla, Chandrashekar R. Elati, Pravinchandra J. Vankawala, Srinivas Gangula, Eswaraiah Sajja, Yerremilli Anjaneyulu, Apurba Bhattacharya, Venkataraman Sundaram, Vijayavitthal T. Mathad
Publikováno v:
CHIMIA, Vol 60, Iss 9 (2006)
The development of a large-scale synthesis for (1S)-3-methyl-1-(2-piperidin-1-ylphenyl)butan-1-amine (S-(+)-1), a key intermediate of repaglinide (2), is described. The process conditions for S-(+)-1 involving nucleophilic substitution, Grignard rea
Externí odkaz:
https://doaj.org/article/7a74b464ce584d1d93f5c6f00548117f
Publikováno v:
Organic Process Research & Development. 13:34-37
Recently, we published a synthesis of escitalopram (S-1) consisting of the resolution of didesmethylcitalopram (3) and subsequent methylation of S-didesmethylcitalopram (S-3) (Org. Process Res. Dev. 2007, 11, 289−292). Some of our observations rega
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f366fadd482b061aaa80b4b65bcbcd9
https://doi.org/10.1021/op8002079
https://doi.org/10.1021/op8002079
Autor:
Vijayavitthal T. Mathad, Venkatraman Sundaram, Apurba Bhattacharya, Muttu L. Avinigiri, Subrahmanyeswararao Chalamala, Pravinchandra J. Vankawala, Rakeshwar Bandichhor, Naveenkumar Kolla, Anitha Naredla, Chandrashekar R. Elati, Srinivas Gangula
Publikováno v:
Tetrahedron Letters. 48:8001-8004
A simple and convergent approach to enantiomerically pure 5-[[2-[1-[3,5-bis(trifluoromethyl)phenyl]ethoxy-3-(4-fluorophenyl)morpholin-4-yl]methyl]-1,2-dihydro-1,2,4-triazol-3-one 1, a potent orally active antagonist of the human neurokinin-1 (NK-1) r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e83463e2bb6792e4686e56572d6c18b0
https://doi.org/10.1016/j.tetlet.2007.09.051
https://doi.org/10.1016/j.tetlet.2007.09.051
Autor:
Apurba Bhattacharya, Raju Veeramalla, Ravi Kumar Mylavarapu, Purandhar Koilkonda, Naveenkumar Kolla, Rakeshwar Bandichhor, Kondaiah Gcm
Publikováno v:
Organic Process Research & Development. 11:1065-1068
Application of a boric acid catalyzed process for the synthesis of the carboxamides, key reaction intermediates in the preparation of various active pharmaceutical ingredients (APIs), has been explored.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1cf91d10aacc06ab7dbbacc0f1051f7
https://doi.org/10.1021/op700098w
https://doi.org/10.1021/op700098w
Autor:
Sundaram Venkatraman, Yerrimilli Anjaneyulu, M. Sreenivasulu, Vijayavitthal T. Mathad, Naveenkumar Kolla, Pravinchandra J. Vankawala, Apurba Bhattacharya, K. Arun Kumar, Chandrashekar R. Elati
Publikováno v:
Synthetic Communications. 37:3439-3446
Enzyme‐catalyzed efficient synthesis of (1R)‐[3,5‐bis (trifluoromethyl) phenyl] ethanol (R)‐(3), a key intermediate for aprepitant, via enantioselective transesterification of racemic 1‐[3,5‐bis (trifluoromethyl) phenyl] ethanol (RS)‐3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a979b4e5b294d7e503edf07fd1253a1
https://doi.org/10.1080/00397910701487473
https://doi.org/10.1080/00397910701487473
Autor:
Subrahmanyeswarara Chalamala, Pravinchandra J. Vankawala, Venkatraman Sundaram, Naveenkumar Kolla, Vijayavitthal T. Mathad, Chandrashekar R. Elati, Srinivas Gangula, Himabindu Vurimidi, Apurba Bhattacharya
Publikováno v:
Organic Process Research & Development. 11:289-292
Research work presented here describes an approach to achieve the enantiopure escitalopram (1) via didesmethyl escitalopram (4), which is easily resolvable compared to citalopram (1a) through diastereomeric salt crystallization. The resolved intermed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96ef6789917244b73d23b75ead4b0a5f
https://doi.org/10.1021/op060175e
https://doi.org/10.1021/op060175e
Autor:
Kikkuru Srirami Reddy, Vijayavitthal T. Mathad, Naveenkumar Kolla, Yerremilli Anjaneyulu, Sundaram Venkatraman, and Apurba Bhattacharya, Chinta Raveendra Reddy, Neti Srinivasan
Publikováno v:
Organic Process Research & Development. 11:81-85
Telmisartan (1), a substituted dibenzimidazole derivative, is an antihypertensive drug, essentially used to control blood pressure. An improved, cost-effective, and impurity-free process for telmisartan (1) suitable for large-scale production is desc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ee56094418fe999e7a09c0fc91cd56e
https://doi.org/10.1021/op060200g
https://doi.org/10.1021/op060200g
Autor:
Subrahmanyeswara Rao Chalamala, Vijayavitthal T. Mathad, Venkataraman Sundaram, Himabindu Vurimidi, Chandrashekar R. Elati, Naveenkumar Kolla, Pravinchandra J. Vankawala
Publikováno v:
Synthetic Communications. 36:169-174
A new, economical, and efficient process has been developed for large‐scale synthesis of donepezil 1, an anti‐Alzheimer's drug. The process involves palladium‐catalyzed hydrogenation of (2E)‐5,6‐di...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b48f6701d5fe5409762224aedefba85b
https://doi.org/10.1080/00397910500334231
https://doi.org/10.1080/00397910500334231
Autor:
Apurba Bhattacharya, Gangula Srinivas, Manne Naga Raju, Naveenkumar Kolla, Neelam Uday Kumar, Kagga Mukkanti, Baddam Sudhakar Reddy, Naredla Anitha, Rakeshwar Bandichhor
Publikováno v:
Tetrahedron Letters. 52:5464-5466
An alternative and scalable synthesis of dexlansoprazole ((R)-(+)-1); the (R)-enantiomer of Lansoprazole with an enantiomeric excess of >99.8% is presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e687f66c7f5ef7ee43f933da81d3383b
https://doi.org/10.1016/j.tetlet.2011.08.033
https://doi.org/10.1016/j.tetlet.2011.08.033