The core structure of a natural product was selected as scaffold for combinatorial library synthesis. The key step for the construction of the 3,9-diazabicyclo[3.3.1]non-6-ene core is a novel Dakin-West/Pictet-Spengler reaction sequence. Route selection for library synthesis was determined
by solution-phase experiments. The solid-phase synthesis was developed based on the synthesis worked out in solution. A number of resins and linkers were studied to obtain the best loading and cleavage conditions. Potential target scaffolds using tryptophan, histidine and phenylalanine as
building blocks were investigated. These efforts led to the development of a synthesis protocol for a tetracyclic scaffold incorporating tryptophan, useful for the preparation of a combinatorial library.
一种
天然产物的核心结构被选为组合库合成的支架。构建3,9-二
氮杂双环[3.3.1]壬-6-
烯核的关键步骤是一种新颖的Dakin-West/Pictet-Spengler反应序列。库合成的路线选择是通过溶液相实验确定的。固相合成是基于溶液中制定的合成方法开发的。研究了多种
树脂和连接剂,以获得最佳的负载和解离条件。使用色
氨酸、组
氨酸和
苯丙
氨酸作为构建块研究了潜在的目标支架。这些努力导致了开发出一种合成方案,用于合成包含色
氨酸的四环支架,可用于制备组合库。