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    • 10. 发明专利
    • SE408301B
    • 1979-06-05
    • SE7405078
    • 1974-04-16
    • BAYER AG
    • MOLLER EMENG KWEHINGER EHORSTMANN H
    • A61K31/415A61P7/02C07D231/18A61P7/10A61P9/12C07D231/20C07D231/24C07D231/52C07D401/06
    • 1429141 Pyrazolin-5-ones BAYER AG 16 April 1974 [17 April 1973 19 Dec 1973] 16507/74 Heading C2C The invention comprises compounds of formula (including tautomers thereof, especially when R is amino), wherein R is H, amino, alkyl, alkenyl, CF 3 or Ph; R 1 is H, alkyl, alkenyl or an optionally substituted aryl or aralkyl radical; R 2 is an alkyl group; and R 3 is a pyridyl radical or an aryl radical carrying 1 or 2 identical or different substituents, which are selected from halogen, CF 3 , alkyl, alkenyl, and alkoxy radicals, or carrying one mono- or di-alkylamino, CF 3 O, nitro, nitrile, carbamoyl, alkyl- or dialkylcarbamoyl, sulphamyl, or alkyl- or dialkylsulphamyl radical, or a group -B, -CO.B or -SO 2 .B (in which B is a saturated ring containing a nitrogen atom in the 1-position) or a -SO n alkyl group (in which n=0, 1 or 2), optionally together with 1 or 2 substituents selected from alkyl, alkenyl, alkoxy, halogen and CF 3 , or carrying none or 1 only of these substituents and a fused branched or unbranched, saturated or unsaturated 5-, 6- or 7- membered ring optionally containing 1 or 2 oxygen or sulphur atoms. In examples, these compounds are prepared by (a) reacting R 2 R 3 CHNHNH 2 with an appropriate ring-forming co-reactant, (2) replacing a compound in which R is halogen, by amino, (3) hydrolysing a compound in which R is (e.g.) NHCO 2 Et, or (4) introducing the R 2 R 3 CH group by N 1 -substitution. Therapeutic compositions having diuretic, saluretic, antihypertensive and antithrombotic activity comprise compounds of the above formula, and may be administered orally, parenterally, rectally, topically, or by spray.