Synthesis and antitumor activity of novel CDDO derivatives / 中国药科大学学报

Twelve novel 2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oic acid(CDDO) derivatives were designed and synthesized(9a-91) by introducing different heterocyclic rings to 17-COOH of CDDO through various linkers.Their structures were determined by ESI-MS,IR and 1 H NMR.The antiproliferative activity of the synthetic derivatives against human cancer cells HCT-116,A549 and HepG2 was evaluated by MTT assay.Several compounds showed potent inhibitory activities against test cell lines.Among them,compound 9c showed more potent antiproliferative activity than the CDDO-imidazolide (CDDO-Im).Moreover,rat plasma stability assay showed that compound 9c was more stable than CDDO-Im.