| 摘要 |
2049058 9011281 PCTABS00002 A compound of formula (I), where Ar is optionally substituted phenyl or methylenedioxyphenyl or benzothienyl, R1 is alkyl, R2 is selected from hydroxy, alkoxy, alkylthio, alkyl and optionally substituted phenyl or amino, and "Het" is a heterocyclic group. The compounds are platelet activating factor inhibitors.
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