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    • 5. 发明授权
    • Process for the preparation of 11-bromo-vincaminic acid ester
derivatives and their use in protecting animals against cerebral hypoxy
    • 制备11-溴 - 长春胺酸酯衍生物的方法及其在保护动物免受脑缺氧的作用
    • US4283401A
    • 1981-08-11
    • US56647
    • 1979-07-11
    • Csaba SzantayLajos SzaboGyorgy KalausLajos DancsiTibor KeveEgon KarpatiLaszlo Szporny
    • Csaba SzantayLajos SzaboGyorgy KalausLajos DancsiTibor KeveEgon KarpatiLaszlo Szporny
    • C07D461/00C07D471/22A61K31/55C07D459/00
    • C07D461/00
    • A novel process for preparing 11-bromo-vincaminic acid esters of the general formula ##STR1## wherein R.sup.1 and R.sup.2 each stand independently from each other for a C.sub.1-6 alkyl group, comprising the steps of treating a 1-alkyl-1-alkoxycarbonylethyl-octahydroindolo-quinolisine of the general formula ##STR2## wherein R.sup.2 is as defined above and R.sup.3 stands for a C.sub.1-6 alkyl group, with a brominating agent and treating the resulting isomeric mixture of the bromo-derivatives with an alkaline agent or treating the corresponding 14-oxo-E-homo-eburnane being unsubstituted in ring A with a brominating agent and nitrosating the resulting 11-bromo-14-oxo-E-homo-eburnane of the general formula ##STR3## wherein R.sup.2 is as defined above, then subjecting the resulting 11-bromo-14-oxo-15-hydroxyimino-E-homoeburnanes to deoxyimination and treating the 14,15-dioxo-derivatives obtained with a base in an alcohol of the general formula R.sup.1 OH, wherein R.sup.1 is as defined above.All the intermediate products are novel and exhibit a therapeutical protecting effect against cerebral hypoxy.
    • 一种用于制备通式为“IMAGE”的11-溴 - 长春胺酸酯的新方法,其中R 1和R 2各自独立地为C 1-6烷基独立地包括如下步骤:将1-烷基-1-烷氧基羰基乙基 其中R 2如上所定义,R 3表示C 1-6烷基,与溴化剂反应,并用碱处理所得到的溴代衍生物的异构体混合物或处理 环A中未取代的相应的14-氧代-E-均 - 异丁苯与溴化剂并亚硝化所得的通式为“IMAGE”的11-溴-14-氧代-E-均 - 胡烷,其中R2如上定义, 然后将所得的11-溴代-14-氧代-15-羟基亚氨基-E-高硼烷进行脱氧亚胺化处理,并用在通式为R 1 OH的醇中用碱获得的14,15-二氧代衍生物进行脱氧,其中R1如上定义 。 所有的中间产物都是新颖的,并且对脑缺氧具有治疗保护作用。