Humulene derivatives from Saharian Asteriscus graveolens
نویسندگان
چکیده
منابع مشابه
The first humulene type sesquiterpene from Lactarius hirtipes.
A new sesquiterpene of humulene type, named 2beta, alpha-epoxy-6Z, 9Z-humuladien-8alpha-ol (1) together with a known compound lactarinic acid was isolated from the fruiting bodies of Lactarius hirtipes. Their structures were established on the basis of spectral evidence (MS, IR, NMR, HMBC, HMQC, 1H-1H COSY, ROSEY experiments). Compound 1 was found as the first humulene-type sesquiterpene in hig...
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Rutacridone, 1-hydroxy-A-methylacridone, and l-hydroxy-3-methoxy-A-methylacridone have been isolated for the first time from callus cultures, which had been obtained from meristematic stem cells of Ruta graveolens L. The alkaloids were identified by co-chromatography with authentic compounds, by IR spectra, and by electronic spectra before and after addition of A1C13 . The use of the bathochrom...
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Several acridone alkaloids have been isolated from roots of Ruta graveolens (for summary see [1, 2]). One of the main alkaloids is rutacridone (1) which seems to be a precursor of several derivatives with hydroxyl or chlorine functions at the isopropyl moiety. As an intermediate an 18,19-epoxide of rutacridone could be postulated [1, 3] that has not yet been identified. Screening for antimicrob...
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Polymers with their myriad functions are indispensable to any modern technology. Today, their production is largely based on fossil fuels. In view of their limited range, other sources are desirable on the long term. Beyond such considerations, renewable resources are also attractive as they can contain unique chemical structures. Thus, carbohydrates, fatty acids or terpenes contain a wealth of...
متن کاملEvolutionary and mechanistic insights from the reconstruction of α-humulene synthases from a modern (+)-germacrene A synthase.
Germacrene A synthase (GAS) from Solidago canadensis catalyzes the conversion of farnesyl diphosphate (FDP) to the plant sesquiterpene (+)-germacrene A. After diphosphate expulsion, farnesyl cation reacts with the distal 10,11-double bond to afford germacrene A (>96%) and <2% α-humulene, which arises from 1,11-cyclization of FDP. The origin of the 1,11-activity of GAS was investigated by amino ...
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ژورنال
عنوان ژورنال: Tetrahedron Letters
سال: 2018
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2018.05.079