Synthesis and Antitumor Activity of Duocarmycin Derivatives: Modification of Segment A of Duocarmycin B2.
作者:Satoru NAGAMURA、Akira ASAI、Yutaka KANDA、Eiji KOBAYASHI、Katsushige GOMI、Hiromitsu SAITO
DOI:10.1248/cpb.44.1723
日期:——
Several A-ring pyrrole derivatives of duocarmycin B2 were synthesized effectively from the 3-hydroxy compounds by utilizing an interesting acid-catalyzed rearrangement, their anticellular activity was preliminarily evaluated by assays of growth inhibition of HeLa S3 cells (in vitro) and antitumor activity against murine sarcoma 180 (in vivo). The 8-O-N, N-dialkylcarbamoyl derivatives of the A-ring pyrrole compound showed remarkably potent in vivo antitumor activity, superior to that of duocarmycin B2. These derivatives were subjected to further biological evaluation. They exhibited potent antitumor activity toward murine solid tumors including M5076 sarcoma, B-16 melanoma and Colon 26 adenocarcinoma. Their most noteworthy feature was their efficacy against various human xenografts including LC-6 (lung), St-4 (stomach), and Co-3 (colon).
通过利用一种有趣的酸催化重排方法,从3-羟基化合物有效地合成了几种A环吡咯衍生的duocarmycin B2类似物,并初步通过HeLa S3细胞(体外)的生长抑制试验和对抗小鼠肉瘤180的抗肿瘤活性(体内)评估了它们的抗细胞活性。A环吡咯化合物的8-O-N,N-二烷基氨基甲酰基衍生物表现出显著的体内抗肿瘤活性,优于duocarmycin B2。这些衍生物接受了进一步的生物学评估。它们对包括M5076肉瘤、B-16黑色素瘤和结肠26腺癌在内的多种小鼠实体瘤显示出强大的抗肿瘤活性。它们最显著的特点是对多种人类异种移植瘤包括LC-6(肺)、St-4(胃)和Co-3(结肠)具有疗效。