Chem. J. Chinese Universities ›› 1997, Vol. 18 ›› Issue (7): 1061.

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Syntheses and Structure-activity Relationship of Podophyllotoxin Derivatives as Potential Anticancer Drugs

WANG Yan-Guang, TAO Lan, PAN Jian-Lin, SHI Jian-Feng, CHEN Yao-Zu   

  1. Department of Chemistry, Zhejiang University, Hangzhou 310027
  • Received:1997-01-26 Online:1997-07-24 Published:1997-07-24

Abstract: Thirteen new 4β-substituted podophyllotoxin derivatives 5-17 were synthesizedand their structures were confirmed by IR, MS, 1H NMRand ESRas well as elementaryanalysis.All new compounds were evaluated for their anticancer activity against mouseleukemia P388 and human stomach carcinoma SGC-7901 cells in vitro- Compounds 5, 7-10exhibited a remarkable inhibition activity against both P388 and SGC-7901 cells.In a struc-ture-activity comparison it was found that 4' -O-demethylpodophyllotoxins 5, 10-13 showeda superior activity to the corresponding 4' -methoxy analogues 6, 14-17 lacking a free OHgroup at C-4'.The replacement of the "-NH-" bridge at C-4 with the "-O-" bridge re-sulted in lowering of the anticancer activity.These results demonstrate the possibility ofconsiderable simplification in the sugar structure of VP-16 and the importance of 4' -phenolichydroxyl group, and suggest further elaboration of 4β-nitrogen-containing substitutlent tooptimize the structure of this class of anticancer compounds.

Key words: Podophyllotoxin, Anticancer, Nitroxyl

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