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    • 8. 发明授权
    • 6-Hydrazono-pyrido[2,1-b] quinazoline-11 ones
    • 6-肼基 - 吡啶并[2,1-b]喹唑啉-11
    • US4395549A
    • 1983-07-26
    • US308038
    • 1981-10-02
    • Istvan HermeczJozsef KokosiAgnes HorvathZoltan MeszarosGyorgy SzaszTibor BreiningLelle Vasvari nee Debreczy
    • Istvan HermeczJozsef KokosiAgnes HorvathZoltan MeszarosGyorgy SzaszTibor BreiningLelle Vasvari nee Debreczy
    • C07D487/04C07D487/14
    • C07D487/04
    • Intermediates useful in the preparation of Rutecarpine and Rutecarpine derivatives are disclosed as well as a process for the preparation of said intermediates having the following formula: ##STR1## wherein R, R.sup.1 and R.sup.2 are the same or different and stand for hydrogen, halogen, nitro, carboxy, nitrile, alkoxy containing 1 to 4 carbon atoms, alkoxycarbonyl containing 1 to 4 carbon atoms in the alkoxy group, alkyl containing 1 to 4 carbon atoms, amino or hydroxy or R and R.sup.1 together stand for methylenedioxy, R.sup.2 stands for hydrogen, R.sup.3 represents hydrogen or alkyl containing 1 to 4 carbon atoms, R.sup.4 stands for phenyl, phenyl substituted by 1 to 3 same or different substituents selected from the group of halogen(s), alkyl, and alkoxy containing 1 to 4 carbon atoms, phenyloxy, hydroxy, nitro, amino, cyano, carboxy, alkoxycarbonyl having 1 to 4 carbon atoms, alkanoyl having 1 to 4 carbon atoms, methylenedioxy, trifluoromethyl, phenyl and dialkylamino having 1 to 4 carbon atoms in the alkyl part or naphthyl and the dotted line indicated an optional double bond. Also pharmaceutically acceptable acid addition and quaternary ammonium salts are disclosed.
    • 公开了用于制备罗非鱼和芦丁类衍生物的中间体以及制备具有下式的所述中间体的方法:其中R,R 1和R 2相同或不同并代表氢, 卤素,硝基,羧基,腈,含有1至4个碳原子的烷氧基,烷氧基中含有1至4个碳原子的烷氧基羰基,含1至4个碳原子的烷基,氨基或羟基或R和R 1一起代表亚甲二氧基, 对于氢,R 3表示氢或含有1至4个碳原子的烷基,R 4代表苯基,被1至3个相同或不同的取代基取代的苯基,所述取代基选自含1至4个碳原子的卤素,烷基和烷氧基 ,苯氧基,羟基,硝基,氨基,氰基,羧基,具有1至4个碳原子的烷氧基羰基,具有1至4个碳原子的烷酰基,亚甲二氧基,三氟甲基,苯基和在烷基中具有1至4个碳原子的二烷基氨基 部分或萘基,虚线表示任选的双键。 还公开了药学上可接受的酸加成盐和季铵盐。