title: Derivatives of 2-methylenepropane-1,3-diol as new antagonists of platelet activating factor.
abstract: Two new achiral platelet activating factor (PAF) antagonists, N-[5-[[2-methylene-3- [[(octadecylamino)carbonyl]oxy]propoxy]carbonyl]pentyl]pyridinium bromide and 3-[6-[[2-methylene-3- [[(octadecylamino)carbonyl]oxy]propoxy]carbonyl]hexyl]thiazolium bromide were synthesized from 2-methylenepropane-1,3-diol. Platelet aggregation in platelet-rich plasma from rabbits, induced by racemic C16-PAF, was competitively antagonized by 9 or 10. At concentrations less than or equal to 10(-4) M, neither compound 9 nor compound 10 caused platelet aggregation, nor did they inhibit platelet aggregation induced by collagen or adenosine diphosphate. Bronchoconstriction in the guinea pig and hypotension in the rat, induced by racemic C16-PAF, were also effectively antagonized by 9 and 10. Both appear to be more potent as PAF antagonists than Takeda's CV-3988.
authors: Chemical Research Department, Leo Pharmaceutical Products, Ballerup, Denmark.
authors: G
authors: G
authors: Grue-Sørensen
authors: I M
authors: IM
authors: Nielsen
authors: C K
authors: CK
authors: Nielsen
mesh_terms: D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D001980:Bronchi / Q000187:drug effects; D005260:Female; D006168:Guinea Pigs; D010742:Phospholipid Ethers / Q000494:pharmacology; D010972:Platelet Activating Factor / Q000037:antagonists & inhibitors*; D010974:Platelet Aggregation / Q000187:drug effects; D011726:Pyridinium Compounds / Q000138:chemical synthesis* / Q000494:pharmacology; D011817:Rabbits; D051381:Rats; D011919:Rats, Inbred Strains; D013329:Structure-Activity Relationship; D013844:Thiazoles / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D010742:Phospholipid Ethers; D010972:Platelet Activating Factor; D011726:Pyridinium Compounds; D013844:Thiazoles; C056039:3-(6-((2-methylene-3-(((octadecylamino)carbonyl)oxy)propoxy)carbonyl)hexyl)thiazolium; C056038:N-(5-((2-methylene-3-(((octadecylamino)carbonyl)oxy)propoxy)carbonyl)pentyl)pyridinium; C037913:CV 3988