title: Effects of the natural and unnatural isomers and degradation products of enprostil on gastric acid secretion and gastrointestinal motility in the rat.
abstract: The gastric antisecretory and gastrointestinal (GI) motility activity of the natural and unnatural allenic isomers and degradation products of enprostil (methyl(+/-)-7-[(1R*,2R*,3R*)-3-hydroxy-2-[(E)-(3R*)-3-hydroxy-4-phenoxy - 1-butenyl]-5-oxocyclopentyl]-4,5-heptadienoate, RS-84135-004) were studied in the rat. The natural R-allenic isomer of enprostil was the most potent antisecretory compound. The 8-iso-enprostil, enprostil free acid, and the 5-acetylene isomer had somewhat less activity while the other compounds were relatively inactive. The natural and unnatural allenic isomers increased intestinal dye transit with the same rank potency as the gastric antisecretory activity. Enprostil, 8-iso-enprostil, prostaglandin A-enprostil and enprostil free acid, all increased intestinal dye transit.
authors.affiliation: Syntex Research, Palo Alto, CA.
authors.forename: R P
authors.initials: RP
authors.lastname: Rosenkranz
authors.forename: P E
authors.initials: PE
authors.lastname: Fisher
authors.forename: M L
authors.initials: ML
authors.lastname: Turke
authors.forename: M R
authors.initials: MR
authors.lastname: Perry
authors.forename: A G
authors.initials: AG
authors.lastname: Wong
authors.forename: D L
authors.initials: DL
authors.lastname: Wren
authors.forename: G F
authors.initials: GF
authors.lastname: Cooper
authors.forename: W L
authors.initials: WL
authors.lastname: Smith
mesh_terms: D000818:Animals; D016620:Enprostil; D004947:Esophagus / Q000502:physiology; D005744:Gastric Acid / Q000378:metabolism*; D005769:Gastrointestinal Motility / Q000187:drug effects*; D006632:Histamine / Q000494:pharmacology; D008297:Male; D011459:Prostaglandins E, Synthetic / Q000494:pharmacology*; D011708:Pylorus / Q000502:physiology; D051381:Rats; D011919:Rats, Inbred Strains; D013237:Stereoisomerism
chemical_list: D011459:Prostaglandins E, Synthetic; D006632:Histamine; D016620:Enprostil