A straightforward synthesis of (−)-(1S,2R)-Allonorcoronamic acid using D-mannitol as the chiral source
作者:Carlos Cativiela、María D. Díaz-de-Villegas、Ana I. Jiménez
DOI:10.1016/0957-4166(95)00269-u
日期:1995.8
(-)-(1S,2R)-Allonorcoronamic acid was synthesized in its enantiomerically pure form from methyl (1S,2R)-1-benzamido-2-[(S)-2,2-dimethyl-1,3-dioxolan-4-yl]cyclopropanecarboxylate, which is easily obtained by methylene insertion on the chiral azlactone derived from 1,2-O-isopropylidene-D-glyceraldehyde.
(−)-(1S,2R)-异冠型RNA烷酸以对映体纯净形式合成,源自甲基 (1S,2R)-1-苯酰胺-2-[(S)-2,2-二甲基-1,3-二氧戊环-4-基]环丙烷羧酸酯,该化合物通过手性氮杂环酮上进行甲基插入法,手性氮杂环酮由1,2-O-异丙叉-D-甘露糖醛酸衍生而来。