title: Computer design and syntheses of antiulcer compounds. 1st communication: N-[3-[3-(1-piperidinomethyl)phenoxy]propyl]amines and benzamides.
abstract: Aiming to develop new antiulcer agents, a quantitative structure-activity relationship (QSAR) study on in vitro (pA2) and in vivo histamine H2-receptor antagonistic activity of a series of N-[3-[3-(1-piperidinomethyl)phenoxy]propyl]amines was carried out using the OASIS computer system. The results showed that pA2 increases with the decrease (increase) of electron donor (acceptor) properties of molecules, particularly at the NH-reaction site. The finding is consistent with the assumption for an increase of histamine H2-receptor activity of the antagonists with their ability to form H-bonds with the receptor through NH groups. The correlations with hydrophobicity and related topological indices are consistent with the hypothesis that logP should indirectly reflect receptor interactions. In addition a series of N-[3-[3-(1-piperidinomethyl)phenoxy]propyl]benzamides are synthesized. The theoretically predicted in vitro activities of these compounds were found to be in accordance with in vivo tests (percent of inhibition of gastric juice and acid output [mEq/H+/3 h]).
authors.affiliation: Bourgas University of Technology, Bulgaria.
authors.forename: V
authors.initials: V
authors.lastname: Kamenska
authors.forename: T
authors.initials: T
authors.lastname: Ivanov
authors.forename: Z
authors.initials: Z
authors.lastname: Nedyalkova
authors.forename: O
authors.initials: O
authors.lastname: Petkov
authors.forename: G
authors.initials: G
authors.lastname: Lutekov
authors.forename: M
authors.initials: M
authors.lastname: Taskov
authors.forename: G
authors.initials: G
authors.lastname: Nikolov
authors.forename: O
authors.initials: O
authors.lastname: Mekenyan
mesh_terms: D000818:Animals; D000897:Anti-Ulcer Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D015195:Drug Design; D005260:Female; D005744:Gastric Acid / Q000378:metabolism; D005750:Gastric Juice / Q000378:metabolism; D006632:Histamine / Q000494:pharmacology; D006635:Histamine H2 Antagonists / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D008958:Models, Molecular; D051381:Rats; D017208:Rats, Wistar; D012984:Software; D013329:Structure-Activity Relationship
chemical_list: D000897:Anti-Ulcer Agents; D006635:Histamine H2 Antagonists; D006632:Histamine