作者:Pasi Virta、Jari Sinkkonen、Harri Lönnberg
DOI:10.1002/1099-0690(200211)2002:21<3616::aid-ejoc3616>3.0.co;2-j
日期:2002.11
The spirobicyclic peptides 2−6 were synthesized as stereoisomeric pairs using an orthogonally protected bis(aminomethyl)malonic acid building block 1 as the branching unit. Peptide 2 was synthesized by two methods. Either the chain assembly and first cyclization were carried out on a Wang resin, and the second cyclization in solution (Scheme 1), or the whole synthesis was performed on a solid-supported
使用正交保护的双(氨甲基)丙二酸结构单元 1 作为支化单元,将螺双环肽 2-6 合成为立体异构对。肽2是通过两种方法合成的。要么在Wang树脂上进行链组装和第一次环化,然后在溶液中进行第二次环化(方案1),要么整个合成在衍生自4-烷氧基苯甲醛的固体支撑的主链酰胺接头上进行(方案3)。通过合成四个额外的螺双环肽 3-6,进一步评估了后一种方法的适用性。