Synthesis and reactions of polymer-bound Ph<sub>3</sub>PCCO: a quick route to tenuazonic acid and other optically pure 5-substituted tetramates
作者:Rainer Schobert、Carsten Jagusch、Claire Melanophy、Gillian Mullen
DOI:10.1039/b412779j
日期:——
amines and alcohols to give immobilized acyl, amide and ester ylides, respectively. Their Wittig reactions lead to alkenes free of phosphane oxide. Optically pure 5-substituted tetramates were obtained from reactions of resin-bound Ph3PCCO with alpha-ammonium esters in one step. The mycotoxin (-)-tenuazonic acid was accordingly prepared in just three steps.
分两步大规模制备了聚苯乙烯结合的累积叶立德Ph3PCCO。它与格利雅化合物,胺和醇反应,分别得到固定的酰基,酰胺和酯基。它们的维蒂希反应生成不含氧化膦的烯烃。从树脂结合的Ph3PCCO与α-铵酯的一步反应中获得光学纯的5-取代的四酸酯。相应地,分三步制备了霉菌毒素(-)-tenuazonic酸。