Practical synthesis of (2S,3R)-3-hydroxy-3-methylproline, a constituent of papuamides, using a diastereoselective tandem Michael-aldol reaction
作者:Kazuishi Makino、Eri Nagata、Yasumasa Hamada
DOI:10.1016/j.tetlet.2005.09.111
日期:2005.11
(2S,3R)-3-Hydroxy-3-methylproline, a constituent of cyclodepsipeptides polyoxypeptins A and B, was efficiently synthesized by lithium chloride-induced diastereoselective tandem Michael-aldol reaction using methyl vinyl ketone and N-1-naphthylsulfonylglycine (R)-binaphthyl ester and subsequent hydrolysis of the product in 39% overall yield and five steps. (c) 2005 Elsevier Ltd. All rights reserved.
(2S,3R)-3-羟基-3-甲基脯氨酸是环状 depsipeptides(聚氧化肽A和B)的组成部分,通过使用甲基丙烯酮和N-1-萘基磺酰基甘氨酸(R)-双萘酯,在氯化锂诱导的对映选择性双联迈克尔-醛缩反应中高效合成,随后对产物进行水解,总产率为39%,共需五步完成。(c)2005 Elsevier Ltd.版权所有。