First chiral synthesis of the N-terminal amino acid congener of nikkomycin Z based on lipase-catalyzed enantioselective acetylation of a primary alcohol possessing two stereogenic centers
作者:Hiroyuki Akita、Yoshiki Takano、Katsushi Nedu、Keisuke Kato
DOI:10.1016/j.tetasy.2006.06.010
日期:2006.7
A stereoselective synthesis of a versatile chiral synthon possessing two stereogenic centers, (2S,3S)-3-[2-(5-benzyloxypyridyl)]2-methyl-1,3-propane diol 12 (> 99% ee), was achieved by using a chemo-enzymatic method. The conversion of (2S,3S)-12 to the homochiral intermediate (2S,3S,4S)-2-benzyloxycarbonylamino-4-[2-(5-benzyloxypyridyl)]-4-tert-butyldimethylsilyloxy-3-methylbutanoic acid 2 corresponding to the N-terminal amino acid congener of nikkomycin Z1 is described. (c) 2006 Elsevier Ltd. All rights reserved.