Useful Synthesis of the Main Dehydrohexapeptide Segment of a Macrocyclic Antibiotic, Berninamycin B
作者:Takahiro Yamada、Kazuo Okumura、Yasuchika Yonezawa、Chung-gi Shin
DOI:10.1246/cl.2001.102
日期:2001.2
The useful synthesis of tetradehydrohexapeptide segment 2, which is the main skeleton of a macrocyclic antibiotic, berninamycin B, was first achieved. The skeleton 2 is constructed, in turn, of 2-[(Z)-1-amino-1-propenyl]-5-methyl-oxazole-4-carboxylic acid, α-dehydroalanine (ΔAla), L-Val, 2-[1-amino-1-ethenyl]-5-methyloxazole-4-carboxylic acid residues, besides L-Thr and ΔAla at the N- and C-termini
首次实现了四脱氢六肽片段 2 的有用合成,该片段是大环抗生素伯那霉素 B 的主要骨架。骨架 2 依次由 2-[(Z)-1-氨基-1-丙烯基]-5-甲基-恶唑-4-羧酸、α-脱氢丙氨酸 (ΔAla)、L-Val、2- [1-氨基-1-乙烯基]-5-甲基恶唑-4-羧酸残基,除了分别位于 N-和 C-末端的 L-Thr 和 ΔAla。