Synthesis of 7,6‐Fused Bicyclic Lactams for Use as Beta‐Turn Mimics
作者:Omar Morales、Wesley Seide、Samuel E. Watson
DOI:10.1080/00397910500466496
日期:2006.3.1
Abstract An improved synthesis of the 7,6‐fused bicyclic lactam is presented starting from readily available chiral starting materials. (S)‐allylglycine is protected as the phthalimide derivative and coupled with (S)‐2‐amino‐6‐hydroxyhexanoic acid methyl ester. Oxidation of the hydroxyl group to the aldehyde followed by enamide synthesis and acyl iminium ion cyclization provide the bicyclic system