Di-and Triterpenoids from the Liverwort Blepharidophyllum densifolium
Open Access
- 1 August 1999
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung C
- Vol. 54 (7-8) , 481-487
- https://doi.org/10.1515/znc-1999-7-804
Abstract
22 ent-kaurane and ent-pimarane type diterpenoids, ten of which are new, ent- 19-acetoxykaur- 16-en-15-one, ent-19-oxo-kaur-16-en-15-one, ent-11α-acetoxy-20-oxo-kaur-16-en-15-one, enf-11α-acetoxy-15-oxo-kaur-16-en-20-acid,-11α-acetoxy-7β-hydroxy-kaur-16-en-15-one, ent-11α-acetoxy-19-hydroxy-kaur-16-en- 15-one, ent-19-acetoxy-11α-hydroxy-kaur-16-en-15- one, ent-11α-acetoxy-6β, 19-dihydroxy-kaur-16-en-15-one, ent-11α-acetoxy-19-hydroxykauran- 15-one and em -19-acetoxy-11α-hydroxy-kauran-15-one were isolated from the liverwort Blepharidophyllum densifolium. Furthermore three known triterpenoids cabraleadiol, cabraleadiolacetate and shoreic acid have been found. Their structures were established by NMR spectroscopyKeywords
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