important structural features improving affinity. Therefore, 7-[(dimethylcarbamoyl)oxy]- and 7-acetoxy-4-chloro-6-phenylpyrrolo[2,1-d][1,5]benzothiazepine (43 and 57) were synthesized. With 7-[(dimethylcarbamoyl)oxy]-6-(p-methoxyphenyl)pyrrolo[2,1- d][1,5]benzothiazepine (65), these were the most promising compounds with IC50s of respectively 9, 8, and 9 nM, under conditions where PK 11195 had an IC50
已鉴定出一类新的对MBR受体具有特异性的
配体:6-芳基
吡咯并[2,1-d] [1,5]苯并
硫氮杂derivatives衍
生物。大多数新合成的酯37-64以及一些中间酮对[3H] PK 11195的结合抑制表现出微摩尔或纳摩尔的亲和力。一项对42种化合物的
SAR研究和分子建模方法得出了初步的结构选择性特征:6,7-双键,7位的
氨基甲酰氧基,alcanoyloxy和
甲磺酰氧基侧链以及4位的预期
氯取代位置似乎是提高亲和力的最重要的结构特征。因此,合成了7-[((二甲基
氨基甲酰基)氧基]-和7-乙酰氧基-4-
氯-6-苯基
吡咯并[2,1-d] [1,5]苯并
硫氮杂((43和57)。与7-[(二甲基
氨基甲酰基)氧基] -6-(对
甲氧基苯基)
吡咯并[2,1- d] [1,5]苯并噻氮平(65),