1-Benzyl-4-[4-(2-pyridylamino)benzyl]-2, 3-dioxopiperazine derivatives, which are antitumor agents of a new type, were synthesized and the structure-activity relationships were investigated. Furthermore, the antitumor activities of 2, 3-dioxopiperazine derivatives were compared with those of 2, 5- or 2, 6-dioxopiperazines. 1-[4-(5-Amino-6-chloro-2-pyridyl)aminobenzyl]-4-benzyl-2, 3-dioxopiperazine (3a) showed excellent in vitro and in vivo antitumor activities. The compound 3a was obtained by reduction of 1-benzyl-4-[4-(5-nitro-2-pyridyl)aminobenzyl]-2, 3-dioxopiperazine (2d) with Sn-conc. HCl or SnCl2-hydrogen chloride-MeOH. Reduction products of 2d obtained under different conditions are discussed.
1-苄基-4-[4-(2-
吡啶基
氨基)苄基]-2, 3-二氧
吡咯烷衍
生物是一类新型
抗肿瘤药物,经过合成并研究了其结构-活性关系。此外,还将2, 3-二氧
吡咯烷衍
生物的抗肿瘤活性与2, 5-或2, 6-二氧
吡咯烷的抗肿瘤活性进行了比较。化合物1-[4-(5-
氨基-6-
氯-2-
吡啶基)
氨基苄基]-4-苄基-2, 3-二氧
吡咯烷(3a)显示出优异的体外和体内抗肿瘤活性。化合物3a是通过用浓
盐酸或SnCl2-氢
氯酸-
甲醇还原1-苄基-4-[4-(5-硝基-2-
吡啶基)
氨基苄基]-2, 3-二氧
吡咯烷(2d)得到的。讨论了在不同条件下获得的2d的还原产物。