作者:Krishna L. Bhat、Jocelyn A. Hover、Charles W. Bock
DOI:10.3987/com-02-9679
日期:——
A general methodology for the conversion of naturally occurring amino acids to 3,4-disubstituted pyrroles is described. A suitably protected amino acid (1) was first converted to the corresponding aldehyde (2). HornerEmmons olefination afforded a facile entry to the corresponding α,β-unsaturated ester (3). The construction of the pyrrole ring system was accomplished in a single step, using an intramolecular
描述了将天然氨基酸转化为 3,4-二取代吡咯的一般方法。适当保护的氨基酸(1)首先转化为相应的醛(2)。HornerEmmons 烯化为相应的 α,β-不饱和酯 (3) 提供了方便的入口。使用与甲苯磺酰甲基异氰化物 (TOSMIC) 的分子内环化反应一步完成吡咯环系统的构建。