An Efficient Synthesis of Carlosic Acid and Other 5-Carboxymethyltetronates from Malates
作者:Rainer Schobert、Carsten Jagusch
DOI:10.1055/s-2005-870018
日期:——
S-Carlosic acid was prepared in six steps and 32% yield from malic acid. Ring closure was effected by a domino addition-Wittig alkenation reaction with Ph3PCCO. A variant employing resin-bound malates furnished immobilized 5-carboxymethyltetronates. It should be amenable to parallelization and automation.
S-卡尔洛斯酸是通过六个步骤从苹果酸中制备的,产率为32%。环闭合通过一个多米诺加成-维迪克烯化反应与Ph3PCCO实现。采用树脂结合的苹果酸盐的变体提供了固定化的5-羧甲基四氢呋喃酸。这应该可以实现平行化和自动化。