Total Synthesis of the Didemnins; III. - Synthesis of Protected (2R,3S)-Alloisoleucine and (3S,4R,5S)-Isostatine Derivatives - Amino Acids from Hydroxy Acids
Total synthesis of the didemnins - 1. synthesis of the peptolide ring
作者:U Schmidt、M Kroner、H Griesser
DOI:10.1016/0040-4039(88)85084-6
日期:1988.1
The 23-membered peptolidering of the didemnins is formed in a two phase cyclization of a linear ω-amino-pentafluorophenyl ester in 70% yield without high dilution. (2,4)-2,5-dimethyl-4-hydroxy-3-oxohexanoic acid (Hip) and (3,4,5)-isostatine are synthesized by acylations of trimethylsilyl malonates.