RGD Reference Report - (+/-)-trans-2-(3-Methoxy-5-methylsulfonyl-4-propoxyphenyl)-5-(3,4,5- trimethoxyphenyl)tetrahydrofuran (L-659,989), a novel, potent PAF receptor antagonist. - Rat Genome Database

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(+/-)-trans-2-(3-Methoxy-5-methylsulfonyl-4-propoxyphenyl)-5-(3,4,5- trimethoxyphenyl)tetrahydrofuran (L-659,989), a novel, potent PAF receptor antagonist.

Authors: Ponpipom, MM  Hwang, SB  Doebber, TW  Acton, JJ  Alberts, AW  Biftu, T  Brooker, DR  Bugianesi, RL  Chabala, JC  Gamble, NL 
Citation: Ponpipom MM, etal., Biochem Biophys Res Commun. 1988 Feb 15;150(3):1213-20.
RGD ID: 10041060
Pubmed: PMID:2829894   (View Abstract at PubMed)

The title compound, L-659,989, is a highly potent, competitive, and selective antagonist of the binding of [3H]PAF to its receptors in platelet membranes from rabbits and humans. It exhibits equilibrium inhibition constants for PAF binding of 1.1 nM (rabbit) to 9.0 nM (human), values that are at least 1-2 orders of magnitude lower than those of other PAF antagonists tested. L-659,989 potently inhibits PAF-induced aggregation of rabbit platelets and degranulation of rat (ED50 4.5 nM) and human (ED50 10 nM) neutrophils. L-659,989 inhibits PAF-induced extravasation and lysosomal enzyme release in rats, and is active orally in female rats (ED50 0.2 mg/kg) with an extraordinary oral duration of action of 12 to 16 hours at 1.0 mg/kg p.o.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
positive regulation of cellular extravasation  IMP 10041060 RGD 
positive regulation of neutrophil degranulation  IMP 10041060 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Ptafr  (platelet-activating factor receptor)


Additional Information