A Convenient Synthesis of Tricyclic Gamma-Lactams, Simulating B-C-D Rings of Azasteroids Via Michael Addition Reaction
摘要:
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.
Synthesis of some thieno gamma lactam monocarboxylic acids with high antibacterial activity: A new look at an old molecular system
作者:Gandhi K. Kar、Bidhan C. Roy、Sujit Das Adhikari、Jayanta K. Ray、Nitosh K. Brahma
DOI:10.1016/s0968-0896(98)80015-1
日期:1998.12
Synthesis and antibacterial activity of some novel monocyclic thienyl gamma lactams are reported. The compounds have been synthesized by a two-step process consisting of, first, intermolecular Michael addition, followed by intramolecular amidification between suitable arylamino malonate and 3-(2'-thienyl) acryloyl chloride and then hydrolysis cum in situ decarboxylation of the diacid. The compounds
Kar, Gandhi K.; Ramesh, Dandala; Chatterjee, Basanta G., Journal of Chemical Research, Miniprint, 1997, # 3, p. 568 - 583
作者:Kar, Gandhi K.、Ramesh, Dandala、Chatterjee, Basanta G.、Ray, Jayanta K.
DOI:——
日期:——
Iridium catalyzed acceptor/acceptor carbene insertion into N–H bonds in water
作者:Kankanala Ramakrishna、Chinnappan Sivasankar
DOI:10.1039/c7ob00177k
日期:——
class of carbenes. The present study reveals that [(COD)IrCl]2 is found to be an efficient catalyst for the A/A class of carbenes, and Pd2(dba)3 for the D/A class of carbenes, for insertion into N–H bonds in water under mild reaction conditions. A reactivity comparison study with different classes of carbenes revealed that silver based catalysts are the right choice for the D/D class of carbenes for insertion
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.