Abstract:
:Two new diterpenes and ent-15alpha-hydroxykaur-16-en-19-oic acid 11,12-acetonide (3), together with 23 known compounds were isolated from the dried aerial parts of Nouelia insignis Franch. The structures of new compounds were determined to be ent-14beta,15alpha-dihydroxykaur-16-en-19-oic acid (1), ent-14beta-hydroxy-15-oxokaur-16-en-19-oic acid (2) on the basis of spectral and chemical evidence. The structure of ent-11alpha,16alpha-epoxy-15alpha-hydroxy-16S-kaur-19-oic acid (4) was confirmed by X-ray crystallographic analysis.
journal_name
J Asian Nat Prod Resjournal_title
Journal of Asian natural products researchauthors
Hu XY,Luo YG,Chen XZ,Zhou L,Zhang GLdoi
10.1080/10286020701189500subject
Has Abstractpub_date
2008-01-01 00:00:00pages
125-31issue
1-2eissn
1028-6020issn
1477-2213pii
790390384journal_volume
10pub_type
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journal_title:Journal of Asian natural products research
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journal_title:Journal of Asian natural products research
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abstract::Three new dammarane-type triterpene ginsenosides, together with six known ginsenosides, were isolated from the leaves of Panax ginseng C.A. Meyer. The new saponins were named as ginsenoside Rh₁₁, ginsenoside Rh₁₂, and ginsenoside Rh₁₃. Their structures were elucidated as (20S)-3β,6α,12β,20-tetrahydroxydammara-25-ene-2...
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journal_title:Journal of Asian natural products research
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abstract::A new benzofuran-type lignan, vitrifol A (1), was isolated from the fruits of Vitex trifolia, along with three known compounds 2-4. Their structures were elucidated mainly on the basis of 1D, 2D NMR and MS spectral data. Compound 1 was first isolated as a dimer of dihydrobenzofuran-type lignan. ...
journal_title:Journal of Asian natural products research
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