Asymmetric Synthesis and Structure-Activity Relationship of the Four Stereoisomers of the Antibiotic Amidinomycin Part 1: The Synthesis
作者:Sun-Young Sung、August Wilhelm Frahm
DOI:10.1002/ardp.19963290605
日期:——
synthesized from homochiral 3‐oxocyclopentanecarboxylic acids (1a) by asymmetric methods, which are based on an asymmetric reductive amination to produce methyl cis‐N‐(1‐phenylethyl)‐3‐aminocyclo‐pentanecarboxylates (3b) via optically active methyl N‐(1‐phenylethyl)‐3‐iminocyclopentane‐carboxylates (2b) for the cis‐isomers of 14. Optically pure trans‐3‐aminocyclopentane‐carboxylic acids (4a) are obtained from