Crystal structure of ent-1β-acetoxy-7α,14α-di-hydroxy-7β,20-epoxykaur-16-en-15-one, C22H30O6
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چکیده
منابع مشابه
1α,11α,15β-Triacetoxy-7β-hydroxy-7α,20-epoxy-ent-kaur-16-en-6-one
The title compound, C(26)H(34)O(9), a natural ent-kaurane diterpenoid, is composed of four rings with the expected cis and trans junctions. In the crystal structure, the mol-ecules stack along the a axis and are linked together by inter-molecular O-H⋯O hydrogen bonds.
متن کامل3α-Hydroxy-ent-atis-16-en-14-one
The title compound, C(20)H(30)O(2), is an ent-atisane diterpenoid which was isolated from the roots of Euphorbia kansuensis. The mol-ecule contains five six-membered rings, among which three six-membered rings of the bicyclo-[2.2.2]octane unit adopt boat conformations and two cyclo-hexane rings adopt chair conformations. In the crystal structure, mol-ecules are connected by inter-molecular O-H⋯...
متن کاملInduction of laryngeal cancer cell death by Ent-11-hydroxy-15-oxo-kaur-16-en-19-oic acid.
BACKGROUND Ent-11-hydroxy-15-oxo-kaur-16-en-19-oic acid (5F) is known to exhibit antitumor activity, but its mechanism is not completely understood. 5F has not been tested in laryngeal cancer. METHODS Two laryngeal cancer cell lines were treated with 5F. Cell death was analyzed by MTT [3-(4,5-dimethylthiozol-2-yl)-2,5-diphenyltetrazolium bromide] and Annexin V assay. Nuclear factor kappa beta...
متن کاملAnti-HIV-1 diterpenoids from leaves and twigs of Polyalthia sclerophylla.
Bioassay-guided fractionation and purification of the anti-HIV-1-active MeOH extract from the leaves and twigs of Polyalthia sclerophylla led to the isolation of two new compounds, ENT-kaur-sclerodimer ( 1) and cyclotucanol 3-palmitate ( 2), along with the known ENT-kaur-16-en-19-oic acid ( 3), 15 beta-hydroxy- ENT-kaur-16-en-19-oic acid ( 4), 15 beta-acetoxy- ENT-kaur-16-en-19-oic acid ( 5), 1...
متن کاملCrystal and molecular structure of (-)-17-hydroxy-neo-clerod-3-en-15-oic acid from Gymnosperma glutinosum.
structure elucidation of two new diterpenes from Gymnosperma glutinosum.1 The chemical structure of the neo-clerodane compound was established on the basis of 1H and 13C nmr spectroscopic studies and chemical reactions, but the stereochemistry at C-13 could not be determined. Therefore we carried out an X-ray crystal analysis of (–)-17-hydroxy-neoclerod-3-en-15-oic acid (Fig. 1) in order to obt...
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ژورنال
عنوان ژورنال: Zeitschrift für Kristallographie - New Crystal Structures
سال: 2016
ISSN: 2197-4578,1433-7266
DOI: 10.1515/ncrs-2015-0305