Coptisine and 8-oxocoptisine were isolated as principles of the gastric-mucous membrane protection from Coptidis rhizoma. The two compounds showed stronger activity than cimetidine and sucralfate. We prepared several derivatives having a partial structure of coptisine from commercially available starting materials. The compounds obtained were tested for gastric-mucous membrane protective activity and a correlation between activity and structure was studied. Our results suggest that the partial charge of the catechol skeleton is related to activity.
从黄连块根中分离出Coptisine和8-oxocoptisine作为胃粘膜保护的主要成分。这两种化合物比
西咪替丁和
硫糖醇显示出更强的活性。我们使用市售起始材料合成了几种具有Coptisine部分结构的衍
生物。获得的化合物经过了胃粘膜保护活性测试,并研究了活性与结构之间的相关性。我们的结果表明,
儿茶酚骨架的部分电荷与活性相关。