A Convenient Access to Chiral Monofunctionalized Bicyclic Guanidinium Receptor Groups
作者:A. Metzger、W. Peschke、F. P. Schmidtchen
DOI:10.1055/s-1995-3953
日期:1995.5
An easy and high-yield route for the preparation of functional and chiral hexahydropyrimido[1,2-a]pyrimidines 3 is described. Starting from known methioninol and 2-methylmercaptotetrahydropyrimidine 5, the target compounds, which may be useful as building blocks in the synthesis of polymodular molecular hosts, were obtained in over 50% total yield. As an example the iodo compound 20 was converted into the homoarginine analog 22 in 70% yield.
本研究描述了制备功能性和手性六氢嘧啶并[1,2-a]嘧啶 3 的简易高产路线。从已知的蛋氨醇和 2-甲基巯基四氢嘧啶 5 开始,以超过 50% 的总收率获得了目标化合物,这些化合物可用作合成多模块分子宿主的构建基块。例如,碘化合物 20 转化为高精氨酸类似物 22 的收率为 70%。