Synthesis and structure-activity relationships of new dimeric mitomycin derivatives; 7-N,7'-N'bis(.OMEGA.-thioalkyl)dimitomycins.
作者:MOTOMICHI KONO、YUTAKA SAITOH、MASAJI KASAI、KUNIKATSU SHIRAHATA、MAKOTO MORIMOTO、TADASHI ASHIZAWA
DOI:10.7164/antibiotics.46.1428
日期:——
The reaction between mitomycin A (1) and cysteamine afforded 7-N,7'-N'-bis(2-thioethyl)dimitomycin C (7), 7-N-[2-[(2-aminoethyl)dithio]ethyl]mitomycin C (8), and 7-methoxy mitosenes (10, 11). The structures of 7 and 8 were elucidated on the basis of spectroscopy and reactions between 1 and 8, and 1 and cystamine. The observation of the time course for the reaction revealed the mechanism of the formation
丝裂霉素A(1)与半胱胺之间的反应得到7-N,7'-N'-双(2-硫乙基)二丝霉素C(7),7-N- [2-[((2-氨基乙基)二硫]乙基]丝裂霉素C(8)和7-甲氧基丝氨酸(10,11)。根据光谱学和在1和8与1和胱胺之间的反应,阐明了7和8的结构。观察反应的时间过程,揭示了形成7和8的机理。半胱胺被1的醌快速氧化得到胱胺,其被1捕获而得到8,另外8与1发生反应。给出7。由于7显示出显着的抗肿瘤活性,所以合成了相关的7-N,7'-N'-双(ω-硫代烷基)二丝霉素。他们还显示出对HeLa-S3体外,肉瘤180(sc-ip),体内白血病P388(ip-ip)的显着抗肿瘤活性。在这些评估中,