摘要:
A series of the C7-substituted A-ring pyrrole derivatives of duocarmycin were synthesized, and evaluated for in vitro anticellular activity against HeLa S-3 cells and in vivo antitumor activity against murine sarcoma 180 in mice. All of the C7-substituted A-ring pyrrole compounds decreased potency in vitro and in vivo. However, some showed strong antitumor activity with T/C values less than 0.3. Among them, the 7-formyl compound 5d showed remarkable potent in vivo antitumor activity and low peripheral blood toxicity, which were equal to 2c. (C) 2000 Elsevier Science Ltd. All rights reserved.