Applications of crotyldiisopinocampheylboranes in synthesis: the total synthesis of nikkomycin B
作者:Anthony G. M. Barrett、Suzanne A. Lebold
DOI:10.1021/jo00016a014
日期:1991.8
(-)-(E)-Crotyldiisopinocampheylborane was employed in a highly diastereoselective and enantioselective synthesis of the gamma-hydroxy-beta-methyl-alpha-aminobutanoic acid moiety of nikkomycin B. A protected derivative of this N-terminal amino acid residue was condensed with uracil polyoxin C benzyl ester to provide, on deprotection, the antifungal agent nikkomycin B.
(-)-(E)-肉豆蔻二异莰基硼烷被用于尼可霉素B中γ-羟基-β-甲基-α-氨基丁酸片段的高对映选择性和非对映选择性合成。该N端氨基酸残基的保护衍生物与尿嘧啶聚氧嘧啶C苄酯发生缩合反应,经去保护后可获得抗真菌剂尼可霉素B。