Non-taxane compounds from the bark of Taxus yunnanensis

From the bark of Taxus yunnanensis , 15 non-taxane compounds were isolated. Through spectroscopic methods such as 1D and 2D NMR and MS experiments, one of them was determined as a new abietane-type diterpenoid named taxayunnin ( 1 ). The other 14 known compounds were identified as taxamairin C ( 2 )...

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Bibliographic Details
Published in:Journal of asian natural products research 2002, Vol.4 (2), p.147-154
Main Authors: Li, Sheng-Hong, Zhang, Hong-Jie, Yao, Ping, Niu, Xue-Mei, Xiang, Wei, Sun, Han-Dong
Format: Article
Language:English
Subjects:
Bark
Biological and medical sciences
General pharmacology
Medical sciences
Non-taxane Compounds
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
Plant Bark - chemistry
Plant Extracts - chemistry
Plant Extracts - isolation & purification
Plants, Medicinal - chemistry
Taxaceae
Taxus - chemistry
Taxus Yunnanensis
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Summary:From the bark of Taxus yunnanensis , 15 non-taxane compounds were isolated. Through spectroscopic methods such as 1D and 2D NMR and MS experiments, one of them was determined as a new abietane-type diterpenoid named taxayunnin ( 1 ). The other 14 known compounds were identified as taxamairin C ( 2 ), taxamairin A ( 3 ), 3 g -hydroxy-sandaracopimaric acid ( 4 ), (+)-3-hydroxy-isodrimenin ( 5 ), rubrosterone ( 6 ), ponasterone A ( 7 ), ecdysterone ( 8 ), 20-hydroxy-echysone-20,22-monoacetonide ( 9 ), 7-oxositosterol ( 10 ), stigmast-4-en-6 g -ol-3-one ( 11 ), 5 f ,6 g -dihydroxy-daucosterol ( 12 ), g -sitosterol ( 13 ), daucosterol ( 14 ), 1- O - g - d -glucopyranosyl-(2 S , 3 R , 4 E , 8 Z )-2- N -(2'-hydroxypalmitoyl)-octadeca-sphinga-4,8-dienine ( 15 ), respectively. Compounds 4 - 6 , 9 - 12 and 15 were isolated from Taxus plants for the first time.
ISSN:1028-6020
1477-2213
DOI:10.1080/10286020290027443