A Convenient Synthesis of Tricyclic Gamma-Lactams, Simulating B-C-D Rings of Azasteroids Via Michael Addition Reaction
作者:Gandhi K. Kar、Basanta G. Chatterjee、Jayanta K. Ray
DOI:10.1080/00397919308009853
日期:1993.7
Cinnamoylchloride on treatment with arylaminomalonates produced the gamma-lactam diester derivatives. Highly stereoselective hydrolysis of the diester, produced the trans acid, which on homologation by Arndt-Eistert's method followed by PPA cyclization generated the tricyclic gamma-lactam derivatives simulating B-C-D ring of many azasteroids in good overall yield.