Functionalized Cis- and Trans-Fused Bicyclic α-Amino Acids via Stereoselective Double Annulation and Dequaternization Reactions
作者:Kazuyuki Hattori、Robert B. Grossman
DOI:10.1021/jo026643+
日期:2003.2.1
Fused bicyclic alpha-amino acids can be prepared by a double Michael reaction of p-anisyl ethynyl ketone and a tethered diacid, cyclization via hydrogenation or hydration of a CN group, and oxidation of the p-anisyl group. The substitution level of the alpha-amino acids can be adjusted by decyanation or decarboethoxylation of the intermediates. Bicyclic alpha-amino acids prepared in this way include