Biebsanin — A new susquiterpene lactone fromAchillea biebersteinii andA. santolina
نویسندگان
چکیده
منابع مشابه
Topical anti-inflammatory activity of flavonoids and a new xanthone from Santolina insularis.
Bioactivity-guided fractionation of the methanol extract from the leaves of Santolina insularis led to the isolation of one new xanthone, (E)-3-(6-[(E)-3-hydroxy-3-oxo-1-propenyl]-9-oxo-9H-xanthen-2-yl)-2-propenoic acid, together with six known flavonoids: hispidulin, nepetin, cirsimaritin, rhamnocitrin, luteolin and luteolin 7-O-beta-D-glucopyranoside. The structures were elucidated by means o...
متن کاملWeighted Clement - Type Interpolation Anda
One of the main mathematical tools in the residual based a posteriori error analysis is a weak interpolation operator due to Cl ement. Based on a partition of unity, we introduce a modiied weak interpolation operator which enjoys a further orthogonality property. As a consequence , the volume contribution in standard residual based a posteriori error estimates can be replaced by a smaller one w...
متن کاملA New Acyl-homoserine Lactone Molecule Generated by Nitrobacter winogradskyi.
It is crucial to reveal the regulatory mechanism of nitrification to understand nitrogen conversion in agricultural systems and wastewater treatment. In this study, the nwiI gene of Nitrobacter winogradskyi was confirmed to be a homoserine lactone synthase by heterologous expression in Escherichia coli that synthesized several acyl-homoserine lactone signals with 7 to 11 carbon acyl groups. A n...
متن کاملA new natural lactone from Dimocarpus longan Lour. seeds.
A new natural product named longanlactone was isolated from Dimocarpus longan Lour. seeds. Its structure was determined as 3-(2-acetyl-1H--pyrrol-1-yl)-5-(prop-2-yn-1-yl)dihydrofuran-2(3H)-one by spectroscopic methods and HRESIMS.
متن کاملA new sesquiterpene lactone from Artemisia rubripes nakai.
The chromatographic separation of a methylene chloride extract of Artemisia rubripes led to the isolation of a new sesquiterpene lactone (3), together with four known compounds, a coumarin (2) and three terpenes (1, 4, and 5). Their structures were characterized to be 1beta,6alpha-dihydroxy-4(15)-eudesmene (1), scopoletin (2), 1alpha,4beta-dihydroxy-8alpha-acetoxy-guaia-2,10(14), 11(13)-triene-...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemistry of Natural Compounds
سال: 1979
ISSN: 0009-3130,1573-8388
DOI: 10.1007/bf00565065