Alkylation of Pyrrolidine‐2,5‐dione with 2‐(3,4‐Dihydro‐1‐napthalenyl)ethyl‐4‐methylphenylsulphonates: A New and General Approach to 13‐Azaequilenin Analogs
摘要:
Pyrrolidine-2,5-dione was N-alkylated with three different 2-(3,4-dihydro-1-napthalenyl)ethyl-4-methylphenylsulphonates to give the corresponding seco-azasteroids which on chemoselective dehydrogenation, reduction with NaBH4 in MeOH at 0degreesC gave the corresponding 5-hydroxy-2-pyrrolidones. Intramolecular cyclization of these 5-hydroxy-2-pyrrolidones afforded the corresponding title compounds.
Alkylation of Pyrrolidine‐2,5‐dione with 2‐(3,4‐Dihydro‐1‐napthalenyl)ethyl‐4‐methylphenylsulphonates: A New and General Approach to 13‐Azaequilenin Analogs
摘要:
Pyrrolidine-2,5-dione was N-alkylated with three different 2-(3,4-dihydro-1-napthalenyl)ethyl-4-methylphenylsulphonates to give the corresponding seco-azasteroids which on chemoselective dehydrogenation, reduction with NaBH4 in MeOH at 0degreesC gave the corresponding 5-hydroxy-2-pyrrolidones. Intramolecular cyclization of these 5-hydroxy-2-pyrrolidones afforded the corresponding title compounds.
Alkylation of Pyrrolidine‐2,5‐dione with 2‐(3,4‐Dihydro‐1‐napthalenyl)ethyl‐4‐methylphenylsulphonates: A New and General Approach to 13‐Azaequilenin Analogs
作者:J. A. Parihar、M. M. V. Ramana
DOI:10.1081/scc-120027232
日期:2004.12.31
Pyrrolidine-2,5-dione was N-alkylated with three different 2-(3,4-dihydro-1-napthalenyl)ethyl-4-methylphenylsulphonates to give the corresponding seco-azasteroids which on chemoselective dehydrogenation, reduction with NaBH4 in MeOH at 0degreesC gave the corresponding 5-hydroxy-2-pyrrolidones. Intramolecular cyclization of these 5-hydroxy-2-pyrrolidones afforded the corresponding title compounds.