described a novel series of nonpeptidic cholecystokinin-B (CCKB)/gastrin receptor antagonists based on a dibenzobicyclo[2.2.2]octane skeleton. We wish now to report on compounds arising out of our earlier work which have substantially greater affinity as antagonists for the CCKB/gastrin receptor system and which maintain, or improve on, the already high selectivity with respect to CCKA receptors. Thus
我们最近描述了基于二苯并
双环[2.2.2]辛烷骨架的一系列新的非肽胆囊收缩素-B(CCKB)/胃泌素受体拮抗剂。现在,我们希望报告由我们早期工作产生的化合物,这些化合物作为CCKB /胃泌素受体系统的拮抗剂具有更大的亲和力,并且相对于CCKA受体,该化合物保持或改善了已经很高的选择性。因此,顺式-7-[[[((1S)-[[3,5-二羧基-苯基)
氨基]羰基] -2-苯基乙基]
氨基]羰基] -8-[[(1-
金刚烷基甲基)
氨基]-羰基] -2,3:5,6-二苯并
双环[2.2.2]辛烷在CCKB /胃泌素受体的小鼠皮膜中表达的pKi为8.80。这些受体相对于CCKA受体的选择性约为1000倍。