The present invention provides anti-neoplastic topoisomerase I inhibitors of the formula: ##STR1## wherein Ar is (C.sub.6 -C.sub.12)aryl or (5- to 12-membered) heteroaryl comprising 1-3 N, S or non-peroxide O, wherein N is unsubstituted or is substituted with (C.sub.1 -C.sub.4)alkyl; X is H, CN, CHO, OH, acetyl, CF.sub.3, O(C.sub.1 -C.sub.4)alkyl, NO.sub.2, NH.sub.2, halogen or halo-(C.sub.1 -C.sub.4)alkyl; each Y is individually H, (C.sub.1 -C.sub.4)alkyl or aralkyl; Y' is H or (C.sub.1 -C.sub.4)alkyl; n is 0 or 1; and each Z is individually H, (C.sub.1 -C.sub.4)alkyl, halogen or halo(C.sub.1 -C.sub.4)alkyl; or a pharmaceutically acceptable salt therein.
本发明提供了一种抗肿瘤拓扑异构酶I
抑制剂,其
化学式如下:##STR1## 其中Ar为(C.sub.6 -C.sub.12)芳基或(5-到12-成员)杂芳基,包括1-3个N、S或非过氧化物O,其中N未取代或取代为(C.sub.1 -C.sub.4)烷基;X为H、CN、CHO、OH、乙酰基、CF.sub.3、O(C.sub.1 -C.sub.4)烷基、NO.sub.2、NH.sub.2、卤素或卤代(C.sub.1 -C.sub.4)烷基;每个Y分别为H、(C.sub.1 -C.sub.4)烷基或芳基烷基;Y'为H或(C.sub.1 -C.sub.4)烷基;n为0或1;每个Z分别为H、(C.sub.1 -C.sub.4)烷基、卤素或卤代(C.sub.1 -C.sub.4)烷基;或其中的药学上可接受的盐。