Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Shyamapada Banerjee"'
Autor:
Subrata Ghosh, Shyamapada Banerjee
Publikováno v:
ARKIVOC, Vol 2002, Iss 7, Pp 8-20 (2002)
Externí odkaz:
https://doaj.org/article/30fe796e2a2a46b8a115daa03e93c09e
Publikováno v:
Current protocolsLiterature Cited. 2(11)
We present an improved synthesis of (S)-HPMPA (1) from an easily accessible and commercially available compound, (S)-3-(benzyloxy)propane-1,2-diol (10). Tritylation of primary alcohol 10 was highly selective, and pure product was isolated in good yie
Publikováno v:
Tetrahedron Letters. 58:2588-2591
A simple and efficient protocol is described for regiosepecific protection of primary hydroxyl group both in nucleosides and other molecules with p - m ethoxy- b enzyl 2,7- d imethyl p ixyl e ther (MBDPE) in presence of 2,3-dichloro-5,6-dicyano-1,4-b
Publikováno v:
Synlett. 28:1057-1064
Concise and highly convergent syntheses of antifungal marine bis(indole) alkaloids, hamacanthin A and trans-2,5-bis(3′-indolyl)piperazine is described. The total synthesis of hamacanthin A is accomplished via the oxidative amidation–chemoselect
Autor:
Dhande Sudhakar Reddy, Shyamapada Banerjee, S. Rajendra Prasad, Yogesh S. Sanghvi, Santhosh Penta, Srishylam Penjarla
Publikováno v:
Nucleosides, nucleotidesnucleic acids. 37(4)
Regioselective protection of primary hydroxyl group in nucleoside and carbohydrate analogs was accomplished using dimethoxytrityl alcohol (DMTr-OH) or dimethylpixyl alcohol (DMPx-OH) in presence of copper(II)nitrate as a Lewis acid catalyst. Excellen
Autor:
Dinesh S. Bhalerao, Unniaran K. Syam Kumar, Shyamapada Banerjee, Satish P. Nikumbh, Rajeshwar Reddy Govindapur, Srinivasan Kaliyaperumal Appaye
Publikováno v:
Helvetica Chimica Acta. 97:1115-1122
A simple and efficient metal-free ethenolate transfer reaction has been elaborated in moderate-to-high yields from vinyl acetate. This reaction was accomplished by generation of potassium ethenolate, which was then reacted with homo and mixed anhydri
Autor:
Ramkrishna Reddy Vakiti, Benoît Deschênes-Simard, Stéphane Dorich, Shyamapada Banerjee, Stephen Hanessian
Publikováno v:
The Journal of Organic Chemistry. 77:9458-9472
This article describes synthetic studies that culminated in the first total synthesis of pactamycin and pactamycate and, in parallel, the two known congeners, de-6-MSA-pactamycin and de-6-MSA-pactamycate, lacking the 6-methylsalicylyl moiety. Startin
Autor:
Yogesh S. Sanghvi, Shyamapada Banerjee, Michael T. Migawa, P. Srishylam, S. Rajendra Prasad, Eric E. Swayze
Publikováno v:
Tetrahedron Letters. 53:4669-4672
A convenient single-step synthesis of several 2,7-dimethyl-9-phenylxanthen-9-ol (DMPx-OH) analogs has been accomplished using a Friedel–Crafts reaction. Treatment of various DMPx-OH with unprotected 2′-O-methoxyethyl-ribonucleosides (MOE) in the
Autor:
Shyamapada Banerjee, Satish P. Nikumbh, Rajeshwar Reddy Govindapur, Dinesh S. Bhalerao, Srinivasan Kaliyaperumal Appaye, Unniaran K. Syam Kumar
Publikováno v:
ChemInform. 46
A simple and efficient metal-free ethenolate transfer reaction furnishing vinyl acetates (III) is developed.
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 254:85-92
Alkoxymethyl groups at the C-5 allylic position of 1,6-dienols have been found to accelerate RCM reaction significantly with the Grubbs’ catalyst PhCH Ru(PCy 3 ) 2 Cl 2 over those of 1,6-dienols containing alkyl or hydroxymethyl groups. This phenom