Total Syntheses of Conformationally Constrained Didemnin B Analogues. Replacements of <i>N</i>,<i>O</i>-Dimethyltyrosine with <scp>l</scp>-1,2,3,4-Tetrahydroisoquinoline and <scp>l</scp>-1,2,3,4-Tetrahydro-7-methoxyisoquinoline
作者:James E. Tarver、Amy J. Pfizenmayer、Madeleine M. Joullié
DOI:10.1021/jo0105991
日期:2001.11.1
The design and synthesis of two conformationally constrained analogues of didemnin B are described. The [N,O-Me(2)Tyr(5)]residue of didemnin B was replaced with L-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (Tic) and L-1,2,3,4-tetrahydro-7-methoxyisoquinoline-3-carboxylic acid (MeO-Tic), which mimic the N,O-dimethylated tyrosine while constraining the conformation of the molecule. Preliminary
描述和设计了两种构型受约束的二氢蝶呤B的类似物。豆双宁B的[N,O-Me(2)Tyr(5)]残基被L-1,2,3,4-四氢异喹啉-3-羧酸(Tic)和L-1,2,3取代, 4-四氢-7-甲氧基异喹啉-3-羧酸(MeO-Tic),可模仿N,O-二甲基化的酪氨酸,同时限制分子的构象。初步结果表明[N,O-Me(2)Tyr(5)]残基的构象与Tic替代所施加的构象非常匹配。