作者:Hua-Ming Miao、Gui-Long Zhao、Lin-Shan Zhang、Hua Shao、Jian-Wu Wang
DOI:10.1002/hlca.201100128
日期:2011.11
The synthesis of a designed, sterically congested geminal dimethyl‐bearing PAR‐1 antagonist was achieved by a route of ten steps, with the oxidation of an electron‐rich benzaldehyde, the construction of a tertiary alkyl azide, and the selective hydrogenolysis of a 1,5‐fused tetrazole to generate the cyclic amidine with Raney‐Ni being the key steps. The selective hydrogenolysis of 1,5‐fused tetrazole
通过十步合成路线,合成了一种设计上存在的,拥挤的双甲基二甲基双酚PAR-1拮抗剂,该过程包括富电子的苯甲醛的氧化,叔烷基叠氮化物的构建以及1的选择性氢解。 ,5-稠合的四唑生成环am,其中阮内-尼是关键步骤。已发现通过阮内镍(Raney- Ni)对1,5-稠合四唑进行选择性氢解以生成环状and,通常可用于合成结构上不常见的环状am。还讨论了构建所需的含二甲基双环环状的几种不成功尝试。