Disclosed herein are novel platinum(II) complexes having a potent anti-tumor activity which are represented by the formula (1), ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, are a hydrogen atom or a C.sub.1-4 alkyl group, respectively, or jointly form a cycloalkane group together with the carbon atom attached thereto; two Xs jointly form a group represented by formula (a) or (b) wherein, R.sub.3 is a hydrogen atom or a methyl group; R.sub.4 and R.sub.5, which may be the same or different, are a hydrogen atom or a C.sub.1-4 alkyl group, respectively, or jointly form a cyclobutane together with the carbon thereto; and the absolute configurations at the respective chiral centers in the 4,5-bis(aminomethyl)-1,3-dioxolane moiety are (4R,5R) or (4S,5S); processes for the preparing the same; and their use for treating animal or human cancer. Further, disclosed herein are novel intermediates useful for the preparation of the platinum(II) complexes and processes for preparing said intermediates.
本文披露了具有强效抗肿瘤活性的新型
铂(II)配合物,其
化学式为(1),其中R.sub.1和R.sub.2,可以相同也可以不同,分别为
氢原子或C.sub.1-4烷基基团,或者与连接的
碳原子共同形成
环烷基基团;两个X共同形成由
化学式(a)或(b)表示的基团,其中,R.sub.3为
氢原子或
甲基基团;R.sub.4和R.sub.5,可以相同也可以不同,分别为
氢原子或C.sub.1-4烷基基团,或者与
碳原子共同形成
环丁烷基团;以及4,5-双(
氨甲基)-1,3-二
氧杂
环戊烷基团中各立体中心的绝对构型为(4R,5R)或(4S,5S);制备这些配合物的方法;以及它们用于治疗动物或人类癌症的用途。此外,本文还披露了用于制备
铂(II)配合物的新型
中间体以及制备这些
中间体的方法。