Stereocontrolled Synthesis of the Northern Part of Potent Proteasome Inhibitor TMC-95A
作者:Masayuki Inoue、Hidetomo Furuyama、Hayato Sakazaki、Masahiro Hirama
DOI:10.1021/ol016303v
日期:2001.9.1
[reaction: see text]. A protected version of the northern part of TMC-95A, a potent and selective proteasome inhibitor, was synthesized with full stereochemical control. Highlights of this synthesis include (i) a (Z)-selective Mizoroki-Heck reaction to construct the oxyindole portion, (ii) a diastereoselective epoxidation, (iii) a 6-endo selective epoxide opening by Boc carbonyl group to establish
[反应:请参见文字]。在完全的立体化学控制下合成了TMC-95A北部的保护版本,TMC-95A是一种有效的选择性蛋白酶体抑制剂。该合成的重点包括(i)(Z)选择性Mizoroki-Heck反应以构建羟吲哚部分,(ii)非对映选择性环氧化,(iii)由Boc羰基形成的6-内酯选择性环氧化物以建立立体异构C6和(iv)在Mitsunobu条件下L-al-苏氨酸衍生物的1,3-消除反应,得到(Z)-1-丙烯胺。