Synthesis and biological evaluation of novel 4β-(1,3,4-oxadiazole-2-amino)-podophyllotoxin derivatives.
A series of new 4β-(1,3,4-oxadiazole-2-amino)-podophyllotoxin derivatives were designed and synthesized. Their cytotoxicity in vitro against six tumor cell lines (DU-145, SGC-7901, A549, SH-SY5Y, HepG2 and HeLa) were evaluated by standard MTT assay. The pharmacological results showed that most of the newly synthesized podophyllotoxin derivatives displayed potent cytotoxicity against at least one of the tested tumor cells; and among the new derivatives, 11b was more potent than podophyllotoxin against HepG2 and Hela cell lines. Furthermore, 11b exhibited much better selectivity toward the normal cell lines L929 and Vero than etoposide, 5-Fu and podophyllotoxin. The possible antitumor mechanism of 11b is to inhibit the activity of DNA topoisomerase II, result in the S-phase arrest, and then cause apoptotic cell death.
School of Pharmaceutical Engineering & Life Science, Changzhou University, 1 Gehu Road, Changzhou, Jiangsu 213164, China.
Jie
J
Ren
Lin
L
Wu
Wen Qun
WQ
Xin
Xin
X
Chen
Kun
K
Hu
D000818:Animals; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D015971:Gene Expression Regulation, Enzymologic / Q000187:drug effects; D006801:Humans; D015394:Molecular Structure; D011034:Podophyllotoxin / Q000031:analogs & derivatives* / Q000737:chemistry* / Q000494:pharmacology; D013329:Structure-Activity Relationship; D059004:Topoisomerase I Inhibitors / Q000494:pharmacology; D059005:Topoisomerase II Inhibitors / Q000494:pharmacology
C576831:4beta-(1,3,4-oxadiazole-2-amino)-podophyllotoxin; D059004:Topoisomerase I Inhibitors; D059005:Topoisomerase II Inhibitors; D011034:Podophyllotoxin