Abstract:
:The intriguing structural similarities of glutamic acid based cholecystokinin (CCK) antagonists (A-64718 and A-65186) and the benzodiazepine CCK antagonist MK-329 (L-364,718) have been reported. Efforts to include the weak CCK antagonist benzotript into this construct utilizing a similar approach have resulted in a novel series of benzotript-based hybrid antagonists N alpha-(3'-quinolylcarbonyl)-(R)-tryptophan di-n-pentylamide (9, A-67396), N alpha-(4',8'-dihydroxy-2'-quinolylcarbonyl)-(R)-tryptophan di-n-pentylamide (23, A-70276), and N alpha-(3'-quinolylcarbonyl)-(R)-5'-hydroxytryptophan di-n-pentylamide (36, A-71134) which possess respectively binding affinities of 23, 21, and 11 nM for the pancreatic CCK-A receptor and which inhibit CCK8-induced amylase secretion. Compound 9 possesses a selectivity of greater than 500-fold for the pancreatic CCK-A receptor over the CCK-B receptor.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Kerwin JF Jr,Wagenaar F,Kopecka H,Lin CW,Miller T,Witte D,Stashko M,Nadzan AMdoi
10.1021/jm00116a002subject
Has Abstractpub_date
1991-12-01 00:00:00pages
3350-9issue
12eissn
0022-2623issn
1520-4804journal_volume
34pub_type
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