申请人:Ciba-Geigy Corporation
公开号:US05110818A1
公开(公告)日:1992-05-05
The invention relates to novel 9H-purine derivatives, especially to the novel substituted 9-benzyl-9H-purines of the general formula ##STR1## in which Ph is a phenyl radical substituted by halogen, R.sub.1 is hydrogen or a free amino group or an amino group that is substituted aliphatically, cycloaliphatically, cycloaliphatically-aliphatically and/or by acyl, and R.sub.2 is halogen, lower alkoxy, lower alkyl, a free amino group, or an amino group that is substituted aliphatically, cycloaliphatically, cycloaliphatically-aliphatically and/or by acyl, with the proviso that R.sub.2 is other than halogen when Ph is 2-fluorophenyl or 2,5- or 2,6-difluorophenyl and R.sub.1 is a radical of the formula --N(R.sub.11)(R.sub.12) (Ia) in which either R.sub.11 is hydrogen, methyl or ethyl and R.sub.12 is hydrogen, methyl, hydroxymethyl, ethyl, n-propyl, isopropyl, cyclopropyl, cyclopenthyl or cyclopropylmethyl, or R.sub.11 is hydrogen and R.sub.12 is methoxymethyl, and with the further proviso that R.sub.2 is other than chlorine when Ph is 3-chlorophenyl, 4-chlorophenyl or 3,4-dichlorophenyl and R.sub.1 is N,N-dimethylamino, and to the novel compounds of formula I in which Ph is 2-fluorophenyl or 2,6-difluorophenyl, R.sub.1 is N-methylamino or N,N-dimethylamino and R.sub.2 is chlorine, and to the salts thereof in each case. These compounds and the salts thereof can be used as pharmaceutical active ingredients and can be manufactured in a manner known per se.
该发明涉及新型的9H-嘌呤衍生物,特别是通式##STR1##中的新型取代9-苄基-9H-嘌呤,其中Ph是被卤素取代的苯基,R.sub.1是氢或自由氨基或被脂肪、环脂肪、环脂肪-脂肪基取代的氨基或酰基,R.sub.2是卤素、低烷氧基、低烷基、自由氨基或被脂肪、环脂肪、环脂肪-脂肪基取代的氨基或酰基,但要求当Ph是2-氟苯基或2,5-或2,6-二氟苯基且R.sub.1是通式--N(R.sub.11)(R.sub.12) (Ia)中的基团时,R.sub.2除卤素外,R.sub.11为氢、甲基或乙基且R.sub.12为氢、甲基、羟甲基、乙基、正丙基、异丙基、环丙基、环戊基或环丙基甲基,或R.sub.11为氢且R.sub.12为甲氧基甲基;并要求当Ph是3-氯苯基、4-氯苯基或3,4-二氯苯基且R.sub.1是N,N-二甲基氨基时,R.sub.2除氯素外,以及通式I中Ph为2-氟苯基或2,6-二氟苯基,R.sub.1为N-甲基氨基或N,N-二甲基氨基,R.sub.2为氯素及其盐。这些化合物及其盐可用作药物活性成分,并可按照已知的方法制备。