Journal of Organic Chemistry p. 489 - 493 (1980)
Update date:2022-08-04
Topics:
Herz, Werner
Kumar, Narendra
Blount, John F.
Extraction of Eupatorium mikanioides Chapm. yielded a group of 2-hydroxy-8-(acyloxy)-trans,trans-1-(10),4-germacradienolides related to the antileukemic sesquiterpene lactone deacetyleupaserrin (1c) which was also isolated.Absolute configurations were established by X-ray crystallography of one of the constituents (1e) which had an unprecedented thiol-containing ester side chain.The flavone eupatorin was also isolated.
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