申请人:Novartis AG
公开号:US05840911A1
公开(公告)日:1998-11-24
Described are compounds of formula I ##STR1## wherein R.sub.1 is hydrogen or hydroxy; R.sub.2, R.sub.2 ' and R.sub.2 " are each independently of the others hydrogen or a substituent other than hydrogen; either R.sub.3 is hydrogen or a substituent other than hydrogen and R.sub.4 is hydrogen or lower alkyl, or R.sub.3 and R.sub.4 together form a divalent radical of the formula --(CH.sub.2).sub.n -- wherein n is 2 or 3; R.sub.5 and R.sub.6 are each independently of the other hydrogen, alkyl or aryl; and either R.sub.7 and R.sub.8 are each hydrogen, or R.sub.7 and R.sub.8 together form a bond; tautomers thereof, provided that at least one tautomerisable group is present; and salts thereof. The compounds inhibit the enzyme S-adenosylmethionine decarboxylase and are suitable, for example, for the treatment of tumours and protozoal infections.
本文描述了I式化合物,其中R1为氢或羟基;R2、R2'和R2"各自独立地为氢或非氢取代基;R3为氢或非氢取代基,R4为氢或较低的烷基,或R3和R4共同形成公式-(CH2)n-的二价基团,其中n为2或3;R5和R6各自独立地为氢、烷基或芳基;R7和R8要么各自为氢,要么共同形成键;其互变异构体,只要至少存在一个可互变异构基团;以及其盐。这些化合物抑制了S-腺苷甲硫氨酸脱羧酶酶,并适用于例如治疗肿瘤和原虫感染的治疗。