Novel Synthesis of (−)-Bestatin from<scp>L</scp>-Aspartic Acid
作者:Masahiko SEKI、Kazuya NAKAO
DOI:10.1271/bbb.63.1304
日期:1999.1
Oxazoline-4-acetate derivative 3 that could be readily obtained fromL-asparticacid was subjected to highly stereoselective hydroxylation, and subsequent Mitsunobu inversion of the hydroxyl group led to (2S,3R)-3-amino-3-benzyl-2-hydroxybutanoic acid derivative 8 in a good yield. Coupling of 8 with L-leucine benzyl ester and subsequent cleavage of the protective groups provided (-)-bestatin 1 in a