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    • 3. 发明授权
    • Process for producing antifungal oyridazinone derivatives
    • 抗真菌哒嗪酮衍生物的制备方法
    • US4603201A
    • 1986-07-29
    • US724800
    • 1985-04-19
    • Hideo TakeshibaTakao KinotoTeruomi Jojima
    • Hideo TakeshibaTakao KinotoTeruomi Jojima
    • A01N43/58C07C45/46C07C45/63C07C51/347C07C51/363C07C59/88C07D237/04C07D237/14C07D401/12C07D237/06A61K31/50
    • C07D401/12A01N43/58C07C323/00C07C45/46C07C45/63C07C51/347C07C51/363C07C59/88C07D237/04C07D237/14
    • Compounds of formula (I): ##STR1## [wherein R.sup.1 and R.sup.3 represent hydrogen or halogen atoms, R.sup.2 represents a hydrogen or halogen atom or a lower alkyl or alkoxy group (provided R.sup.1, R.sup.2 and R.sup.3 are not simultaneously hydrogen), represents a single or double carbon-carbon bond and, where it is a single bond, R.sup.4 represents a group of formula --SR.sup.5 (wherein R.sup.5 represents an optionally substituted alkyl, phenyl, aralkyl or pyridyl group or a lower alkenyl group) and, where it is a double bond, R.sup.4 represents hydrogen] can be prepared by reacting a compound of formula (II): ##STR2## with a compound of formula R.sup.6 H [where R.sup.6 represents a group --SR.sup.5, a group --SR.sup.7 (where R.sup.7 represents a group of formula ##STR3## and Y represents oxygen or sulphur, R.sup.8 and R.sup.9 represent lower alkoxy groups and R.sup.10 represents a lower alkoxy, lower alkyl or phenyl group), a methoxy group or a halogen atom] to give a compound of formula (IV): ##STR4## or, where R.sup.6 represents a methoxy group, a methyl ester thereof; reacting this compound with hydrazine to give a compound of formula (V): ##STR5## and, if necessary, treating the compound of formula (V) with an acid or a base to produce the compound of formula (VI). All of the compounds of formula (I) are valuable antifungal agents and compounds of formula (V) where R.sup.6 represents a group of formula --SR.sup.5 are novel compounds.
    • 式(I)化合物:其中R 1和R 3表示氢或卤素原子,R 2表示氢或卤素原子或低级烷基或烷氧基(条件是R 1,R 2和R 3不同时为氢) 表示单或双碳 - 碳键,并且其中单键,R 4表示式-SR 5的基团(其中R 5表示任选取代的烷基,苯基,芳烷基或吡啶基或​​低级烯基) 其中它是双键,R 4代表氢]可以通过使式(II)化合物:其中R6代表基团-SR5,基团-SR7(Ⅱ)的化合物 其中R 7表示式的基团,Y表示氧或硫,R 8和R 9表示低级烷氧基,R 10表示低级烷氧基,低级烷基或苯基),甲氧基或卤原子],得到化合物 (IV)的化合物:其中R 6表示甲氧基,其甲酯 ; 使该化合物与肼反应,得到式(Ⅴ)化合物:ι(Ⅴ)或(Ⅵ):Ⅵ(VI),如果需要,用酸或 制备式(VI)化合物。 式(I)的所有化合物均为有价值的抗真菌剂,式(V)化合物,其中R 6表示式-SR 5的基团是新化合物。