Boc-CCK-4 derivatives containing side-chain ureas as potent and selective CCK-A receptor agonists
作者:Kazumi Shiosaki、Chun Wel Lin、Hana Kopecka、Michael D. Tufano、Bruce R. Bianchi、Thomas R. Miller、David G. Witte、Alex M. Nadzan
DOI:10.1021/jm00113a023
日期:1991.9
derivatives were communicated recently as having high potency and selectivity for the CCK-Areceptor (Shiosaki et al. J. Med. Chem. 1990, 33, 2950-2952). While Boc-CCK-4 binds selectively to the CCK-B receptor, replacement of the methionine with an N epsilon-substituted lysine dramatically reversed receptorselectivity, leading to the development of this novel series of tetrapeptides. A detailed structure-activity