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Sesquiterpenes of thalloid liverworts of the genera Conocephalum, Lunularia, Metzgeria and Riccardia

, : Sesquiterpenes of thalloid liverworts of the genera Conocephalum, Lunularia, Metzgeria and Riccardia. Phytochemistry 16(11): 1727-1729

Thalloid liverworts of orders Metzgeriales and Marchantiales elaborate essential oils distinguishable from those of the Jungermanniales by the absence of -barbatene and anastreptene. Riccardia sinuata elaborates a novel tricyclic exomethylene sesquiterpene of as yet undetermined structure. Conocephalum conicum elaborates cadinene-type sesquiterpenes. -Cadinene from the latter species is clearly enantiomeric to the same product from vascular plants.


DOI: 10.1016/0031-9422(71)85080-x

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