Novel prodrugs von 6-hydroxy-2,3-dihydro-1h-indoles, 5-hydroxy-1,2-dihydro-3h-pyrrolo[3,2-e]indoles and 5-hydroxy-1,2-dihydro-3h-benzo(e)indoles as well as of 6-hydroxy-1,2,3,4-tetrahydro-benzo[f]quinoline derivatives for use in selective cancer therapy
申请人:——
公开号:US20040033962A1
公开(公告)日:2004-02-19
The chemotherapy of malignant tumours is greatly restricted by the generally slight differentiation of the available cytostatic agents between normal and malignant tissue. In order to achieve an improvement of the selectivity in cancer therapy, novel prodrugs have been developed from 6-hydroxy-2,3-dihydro-1H-indolene, 5-hydroxy-1,2-dihydro-3H-pyrrolo[3,2-e]indolene and 5-hydroxy-1,2-dihydro-3H-benzo[e]indolene as well as from 6-hydroxy-1,2,3,4-tetrahydro-benzo[f]-quinolines, that may be used within the framework of the ADEP therapy (antibody directed enzyme prodrug therapy). The new prodrugs are characterised by a high difference in toxicity between the prodrug and underlying drug and by a very high efficacy of the drug. The high selectivity of the new prodrugs is probably attributed to the fact that, in the new prodrugs, a secondary halide is present in contrast to the prodrugs of a similar type previously produced by us. The direct alkylation of the DNA or RNA by the prodrugs and thus the toxicity of the prodrugs is thereby reduced. After splitting off of the glycosidic and/or acetal group on the phenolic hydroxy groups of the prodrugs, a spirocyclopropacyclohexadiene is formed which, being a highly toxic group, effects an alkylation of the DNA or RNA.
恶性肿瘤的化疗受到限制,因为现有的细胞毒药物在正常组织和恶性组织之间的细胞毒作用差异很小。为了提高癌症治疗的选择性,从6-羟基-2,3-二氢-1H-吲哚烯、5-羟基-1,2-二氢-3H-吡咯[3,2-e]吲哚烯、5-羟基-1,2-二氢-3H-苯并[e]吲哚烯以及6-羟基-1,2,3,4-四氢-苯并[f]-喹啉中开发了新的前药,可在ADEP疗法(抗体导向酶前药疗法)框架内使用。新的前药具有前药和基础药物之间毒性差异很大以及药物非常高效的特点。新前药的高选择性可能归因于新前药中存在次卤化物,与我们之前生产的类似类型前药不同。前药直接烷基化DNA或RNA,从而减少了前药的毒性。在前药的酚羟基上脱去糖苷和/或缩醛基团后,形成了一个高毒性的螺环丙烷环己二烯,该基团对DNA或RNA进行烷基化。