Diterpenes of Cheilanthes argentea, a Fern from Asia
Open Access
- 1 December 1982
- journal article
- research article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung C
- Vol. 37 (11-12) , 1283-1285
- https://doi.org/10.1515/znc-1982-11-1231
Abstract
The major components o f the white exudate or farina from the abaxial side of fronds of the fern Cheilanthes argentea are the diterpenoid acids ent-8(17),E-13-labdadien-15-oic acid and its 3 R-hydroxy derivative. This is the first report of the first o f these compounds as a natural product. Both are highly crystalline. Plants from the Asian mainland and Japan contain mostly the first compound whereas plants from Taiwan contain mostly the 3 R-hydroxy derivative. Thus, there are at least two distinct chemical races of the species Cheilanthes argentea.Keywords
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