Výsledky vyhledávání - "Kyatham Srinivas"

A biomimetic approach for bicyclic alkaloids using acetal pro-nucleophile: total synthesis of (±)-epilupinine and formal syntheses of (±)-laburnine, (±)-isoretronecanol, (±)-tashiromine

Autor: Yarkali Krishna, Archita Gupta, Kyatham Srinivas, Dipankar Koley

Publikováno v: RSC Adv.. 4:3934-3937

A direct Mannich type diastereoselective biomimetic cyclization using acetal as a pro-nucleophile leading to the hydroxymethyl substituted bicyclic framework of various bicyclic alkaloids is presented. Following this protocol, total synthesis of (±)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e1fbeb0c54ec27741fe9c342c27661d0
https://doi.org/10.1039/c3ra44762f

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Organocatalytic, Asymmetric Synthesis of Aza-Quaternary Center of Izidine Alkaloids: Synthesis of (-)-Tricyclic Skeleton of Cylindricine

Autor: Dipankar Koley, Dinabandhu Das, Nishant Singh, Kyatham Srinivas

Publikováno v: Organic letters. 19(1)

We report a highly efficient, enantioselective, organocatalytic method for the synthesis of izidinone alkaloids containing a bridgehead aza-quaternary center using ketone-derived N,O-hemiaminal with a tethered acetal. Alkyl-, aryl-, and alkenyl-subst

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59cabb4b8316fcfeebc3863cf882245e
https://pubmed.ncbi.nlm.nih.gov/27982605

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ChemInform Abstract: Organocatalytic Asymmetric Mannich Cyclization of Hydroxylactams with Acetals: Total Syntheses of (-)-Epilupinine, (-)-Tashiromine, and (-)-Trachelanthamidine

Autor: Afsar Khan, Kyatham Srinivas, Yarkali Krishna, Ruchir Kant, Dipankar Koley

Publikováno v: ChemInform. 46

(-)-Tashiromine (XV), (-)-trachelanthamidine (XVI) and (-)-epilupinine (XVII) can be easily prepared from precursors (IIa), (V), and (IXa).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5f99548ba86c386c81126c3e55ff3ab9
https://doi.org/10.1002/chin.201516295

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Organocatalytic asymmetric Mannich cyclization of hydroxylactams with acetals: total syntheses of (-)-epilupinine, (-)-tashiromine, and (-)-trachelanthamidine

Autor: Ruchir Kant, Kyatham Srinivas, Dipankar Koley, Yarkali Krishna, Afsar Khan

Publikováno v: Angewandte Chemie (International ed. in English). 53(48)

An asymmetric, organocatalytic, one-pot Mannich cyclization between a hydroxylactam and acetal is described to provide fused, bicyclic alkaloids bearing a bridgehead N atom. Both aliphatic and aromatic substrates were used in this transformation to f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b90f4ac092b9bce5552d969e8834c16d
https://pubmed.ncbi.nlm.nih.gov/25264221

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A Useful Metaheuristic for Dynamic Channel Assignment in Mobile Cellular Systems

Autor: Deepak Kumar Singh, Kyatham Srinivas, D. Bhagwan Das

Publikováno v: Re-Unir. Archivo Institucional de la Universidad Internacional de La Rioja
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International Journal of Interactive Multimedia and Artificial Intelligence, Vol 1, Iss 6, Pp 6-12 (2012)

The prime objective of a Channel Assignment Problem (CAP) is to assign appropriate number of required channels to each cell in a way to achieve both efficient frequency spectrum utilization and minimization of interference effects (by satisfying a nu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::477fbb83531365023b86fa3559e560ff
https://doi.org/10.9781/ijimai.2012.161

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