Abstract
Seven compounds have been isolated from the Tibetan herb Biebersteinia heterostemon Maxim.On basis of IR ,UV ,NMR ,MS spectral data and chemical methods, their structures wereidentified as :β-sitosterol(Ⅰ) ,daucosterol(Ⅱ), umbelliferone(Ⅲ),5,7,3′-trihydroxy-8,4′,5′ -trimethoxyflavone (Ⅳ),glucoluteolin(Ⅴ),quercimeritrin(Ⅵ)and N-3-methyl-2-butenyl urea(Ⅶ).Compounds Ⅳ and Ⅶ are two new natural products.Compound Ⅶ is an active constituent.In pharmacological tests it showed some hypotensive,analgesic and immunity stimulating effects.
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Claims 5
Claim · model-written summary
Seven compounds were isolated from Biebersteinia heterostemon.
- Taxon
- Biebersteinia heterostemon Maxim.Biebersteinia heterostemone0
- Outcome
- compounds have been isolatede0
- Value
- Sevene0
Verbatim
e0“Seven compounds have been isolated from the Tibetan herb Biebersteinia heterostemon Maxim.”
Claim · model-written summary
β-sitosterol, daucosterol, and umbelliferone were identified.
- Taxon
- Biebersteinia heterostemon Maxim.Biebersteinia heterostemont0
- Outcome
- β-sitosterol(Ⅰ) ,daucosterol(Ⅱ), umbelliferone(Ⅲ)e0
Verbatim
e0“β-sitosterol(Ⅰ) ,daucosterol(Ⅱ), umbelliferone(Ⅲ)”
t0“BIEBERSTEINIA HETEROSTEMON MAXIM.”
Claim · model-written summary
A trimethoxyflavone, glucoluteolin and quercimeritrin were identified.
- Taxon
- Biebersteinia heterostemon Maxim.Biebersteinia heterostemont0
- Outcome
- 5,7,3′-trihydroxy-8,4′,5′ -trimethoxyflavone (Ⅳ),glucoluteolin(Ⅴ),quercimeritrin(Ⅵ)e0
Verbatim
e0“5,7,3′-trihydroxy-8,4′,5′ -trimethoxyflavone (Ⅳ),glucoluteolin(Ⅴ),quercimeritrin(Ⅵ)”
t0“BIEBERSTEINIA HETEROSTEMON MAXIM.”
Claim · model-written summary
N-3-methyl-2-butenyl urea was identified.
- Taxon
- Biebersteinia heterostemon Maxim.Biebersteinia heterostemont0
- Outcome
- N-3-methyl-2-butenyl urea(Ⅶ)e0
Verbatim
e0“N-3-methyl-2-butenyl urea(Ⅶ)”
t0“BIEBERSTEINIA HETEROSTEMON MAXIM.”
Claim · model-written summary
Compounds IV and VII were new natural products.
- Taxon
- Biebersteinia heterostemon Maxim.Biebersteinia heterostemont0
- Outcome
- Compounds Ⅳ and Ⅶ are two new natural productse0
Verbatim
e0“Compounds Ⅳ and Ⅶ are two new natural products”
t0“BIEBERSTEINIA HETEROSTEMON MAXIM.”