名称:
                                Synthesis and biological evaluation of cryptophycin analogs with substitution at C-6 (fragment C region)
                             
                            
                                摘要:
                                Analogs of the antitumor agents cryptophycins 1 and 8 with dialkyl substitution at C-6 (fragment C) were synthesized and evaluated for in vitro cytotoxicity against human leukemia cells (CCRF-CEM). The activity of these analogs decreased as the size of the substituents at C-6 increased. The C-6 spirocylopropyl compound (2g) was highly potent in vitro and showed excellent antitumor activity in animal models. (C) 1999 Elsevier Science Ltd. ALI rights reserved.
                             
                                                            
                                    DOI:
                                    10.1016/s0960-894x(98)00748-3