Antitumor Agents XXXVI: Structural Elucidation of Sesquiterpene Lactones Microhelenins-A, B, and C, Microlenin Acetate, and Plenolin from Helenium microcephalum
作者:Yasuhiro Imakura、Kuo-Hsiung Lee、Donald Sims、Rong-Yang Wu、Iris H. Hall、Hiroshi Furukawa、Masataka Itoigawa、Kazue Yonaha
DOI:10.1002/jps.2600690916
日期:1980.9
The antitumorsesquiterpenelactones microhelenins-A, B, and C, microlenin acetate, and plenolin were isolated fromHeleniummicrocephalum. The structures and stereochemistry of these lactones were determined by physical methods as well as by chemical transformations and correlations. Microlenin acetate appears to be the first novel dimeric sesquiterpenelactone demonstrated to have significant antileukemic