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Antitumor agents XXXVI: Structural elucidation of sesquiterpene lactones microhelenins-A, B, and C, microlenin acetate, and plenolin from Helenium microcephalum

✍ Scribed by Yasuhiro Imakura; Kuo-Hsiung Lee; Donald Sims; Rong-Yang Wu; Iris H. Hall; Hiroshi Furukawa; Masataka Itoigawa; Kazue Yonaha

Publisher: John Wiley and Sons
Year: 1980
Tongue: English
Weight: 649 KB
Volume: 69
Category: Article
ISSN: 0022-3549
DOI: 10.1002/jps.2600690916

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✦ Synopsis

The antitumor sesquiterpene lactones microhelenins-A, B, and C, microlenin acetate, and plenolin were isolated from Helenium microcephalum. 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 sesquiterpene lactone demonstrated to have significant antileukemic activity.

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Keyphrases 0 Antitumor agents, potential-microhelenin-A, isolated from Helenium microcephalum, NMR spectral identification 0 Microhelenin-A-potential antitumor agent, isolated from Helenium microcephalurn, NMR spectral identification 0 Helenium microcephalum-microhelenin-A, potential antitumor agent