New convenient, enantiospecific synthesis of (S,S)- and (R,R)-2,2′-bipyrrolidine derivatives
作者:Hiyoshizo Kotsuki、Hiroko Kuzume、Tetsushi Gohda、Misako Fukuhara、Masamitsu Ochi、Tohru Oishi、Masahiro Hirama、Motoo Shiro
DOI:10.1016/0957-4166(95)00297-3
日期:1995.9
An enantiomeric pair of (S,S)- and (R,R)-bipyrrolidine derivatives has been prepared from D- and L-tartaric acids or D-mannitol as optically active starting materials. Taking advantage of the C2-symmetric nature of these chiral sources, the synthetic sequence has been established by using efficient side chain elongation, stereospecific conversion of a vicinal diol into a diazido group via SN2 inversion
(S,S)-和(R,R)-联吡咯烷衍生物的对映体对是由D-和L-酒石酸或D-甘露糖醇作为旋光起始原料制备的。利用这些手性来源的C 2对称性质,通过使用有效的侧链延伸,通过S N 2转化将邻二元醇立体定向转化为重氮基团和通过分子内取代形成吡咯烷环,从而建立了合成序列作为关键步骤。