Sesquiterpene lactones. XXXII. Guaianolides in species from the genus Chartolepis Cass.

Gerard Nowak, Bohdan Drożdż, Miroslav Holub

Abstract


Differences in the composition of the "lactone fraction" of 4 species from the genus Chartolepis Cass. were observed. Cynaropierin was isolated from the above-ground parts of Chartolepis intermedia Boiss. and the occurrence there of grossheimin was confirmed. The following compounds were isolated from the above-ground parts of Chartolepis glastifolia (L.) Cass.: centaurepensin, repin, cebellin C, acroptillin, cebellin D, cynaropicrin, cebellin F and janerin. Centaurepensin, repin, cebellin C, acroptillin, cynaropicrin, janerin and a new guaianolide, pterocaulin were isolated from the herb Chartolepis biebersteinii Jaub. et Spach. In addition to the lactones found in Chartolepis biebersteinii, Chartolepis pterocaula (Trautv.) Czer. also accumulated grossheimin.

Keywords


sesyuiterpene lactones; Chartolepis; Centaureinae; Compositae; chemotaxonomy

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