Crystal structure of 1α,7β-dihydroxy-11β-acetoxy-ent-7β,20-epoxykaur-16-en-15-one, C22H30O6
نویسندگان
چکیده
منابع مشابه
3α-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 کامل1α,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.
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coumarin derivatives are of great interest in view of their sensitizing abilities in photodynamic effects and their wide occurrence in the plant kingdom. Umbelliferone, 7hydroxycoumarin, which has been known as a strongly fluorescing compound, also exhibits chemiluminescence.1 On the other hand, 7-hydroxy-4-methyl coumarin2 (Fig. 1-(I))has been applied in laser gain studies. The title compound ...
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The structure of 7,8-dihydroxy-4-methylcoumarin was determined by an X-ray diffraction method. The compound crystallized in the triclinic space group P1, Z = 2, with a = 7.631(2), b = 9.456(5), c = 7.075(3)A, alpha = 103.13(3), beta = 91.84(3), gamma= 68.21(3) degrees, and V= 460.9(3)A3. The X-ray crystal structure was also compared with those of 5,7-dihydroxy-4-methylcoumarin and 7-hydroxy-4-m...
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...
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ژورنال
عنوان ژورنال: Zeitschrift für Kristallographie - New Crystal Structures
سال: 2016
ISSN: 2197-4578,1433-7266
DOI: 10.1515/ncrs-2015-0306