Twelve ent-kaurane diterpenoids, nine of which are new, have been isol
ated from the liverwort Jungermannia truncata, collected in Malaysia.
The extract also contained new gymnomitrane and nor-gymnomitrane sequi
terpenoids together with known pimarane and halimane diterpenoids. The
structures were established mainly by H-1 and C-13 NMR spectroscopy.
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