Di- and triterpenoids from the liverwort Blepharidophyllum densifolium

Authors
Flegel, M Becker, H
Citation
M. Flegel et H. Becker, Di- and triterpenoids from the liverwort Blepharidophyllum densifolium, Z NATURFO C, 54(7-8), 1999, pp. 481-487
Citations number
20
Categorie Soggetti
Biochemistry & Biophysics
Journal title
ZEITSCHRIFT FUR NATURFORSCHUNG C-A JOURNAL OF BIOSCIENCES
ISSN journal
09395075 → ACNP
Volume
54
Issue
7-8
Year of publication
1999
Pages
481 - 487
Database
ISI
SICI code
0939-5075(199907/08)54:7-8<481:DATFTL>2.0.ZU;2-#
Abstract
22 ent-kaurane and ent-pimarane type diterpenoids, ten of which are new, en t-19-acetoxy-kaur-16-en-15-one, ent-19-oxo-kaur-16-en-15-one, ent-11 alpha- acetoxy-20-oxo-kaur-16-en-15-one, ent-11 alpha-acetoxy-15-oxo-kaur-16-en-20 -acid, ent-11 alpha-acetoxy-7 beta-hydroxy-kaur-16-en-15-one, ent-11 alpha- acetoxy-19-hydroxy-kaur-16-en-15-one, ent-19-acetoxy-11 alpha-hydroxy-kaur- 16-en-15-one, ent-11 alpha-acetoxy-6 beta,19-dihydroxy-kaur-16-en-15-one, e nt-19-acetoxy-19-hydroxy-kauran-15-one and ent-19-acetoxy-11 alpha-hydroxy- kauran-15-one were isolated from the liverwort Blepharidophyllum densifoliu m. Furthermore three known triterpenoids cabraleadiol, cabraleadiolacetate and shoreic acid have been found. Their structures were established by NMR spectroscopy.