4a-Hydroxy-9-(2-methoxyphenyl)-4,4a,5,6,7,8,9,9a-octahydro-3H-xanthene-1,8(2H)-dione
نویسندگان
چکیده
منابع مشابه
4a-Hydroxy-9-(4-hydroxyphenyl)-4,4a,5,6,9,9a-hexahydro-3H-xanthene-1,8(2H,7H)-dione
The title compound, C(19)H(20)O(5), was synthesized by the reaction of 1,3-cyclo-hexa-nedione and 4-hy-droxy-benzaldehyde in the presence of PdCl(2) and thio-urea. The tetra-hydro-pyran ring and the six-membered cyclo-hexene ring adopt envelope conformations, and the six-membered cyclo-hexane ring is in a chair conformation. The crystal packing is stabilized by classical inter-molecular O-H⋯O h...
متن کامل4a-Hydroxy-9-(2-methoxyphenyl)-4,4a,5,6,7,8,9,9a-octahydro-3H-xanthene-1,8(2H)-dione
In the title compound, C(20)H(22)O(5), an S(6) ring motif is formed by an intra-molecular C-H⋯O hydrogen bond, which contributes to the stabilization of the mol-ecule. In the xanthene system, the cyclo-hexane ring adopts a chair conformation, the cyclo-hexene ring adopts a half-boat conformation and the tetra-hydro-pyran ring adopts a half-chair conformation. The mean plane of the four essentia...
متن کامل9-(4-Chlorophenyl)-4a-hydroxy-4,4a,5,6,9,9a-hexahydro-3H-xanthene-1,8(2H,7H)-dione
In the title compound, C(19)H(19)ClO(4), the central fused ring and the attached cyclo-hexene ring adopt envelope conformations, while the cyclo-hexane ring adopts a chair conformation. The crystal packing is stabilized by O-H⋯O hydrogen bonds, which link the mol-ecules into a chain along the b axis. Weak C-H⋯O bonds also occur.
متن کامل9-(2,3-Dichlorophenyl)-4a-hydroxy-3,3,6,6-tetramethyl-4,4a,5,6,9,9a-hexahydro-3H-xanthene-1,8(2H,7H)-dione
Mol-ecules of the title compound, C(23)H(26)Cl(2)O(4), are linked by hydrogen bonds between the hydroxyl O atom and the carbonyl O atom of a neighboring mol-ecule. The central hydropyran and fused cyclohexanone rings adopt half-chair conformations, while the fused hydroxycyclohexanone ring adopts a chair conformation.
متن کامل9-(2-Chlorophenyl)-4a-hydroxy-3,4,4a,5,6,7,9,9a-octahydro-2H-xanthene-1,8-dione
In the title compound, C19H19ClO4, the di-hydro-pyran ring and the cyclo-hexane ring adopt a half-chair conformation and a chair conformation, respectively. The cyclo-hexene ring has an envelope conformation with the central CH2 C atom as the flap. This atom is disordered over two positions [site-occupancy ratio = 0.744 (12):0.256 (12)] above and below the mean plane formed by the other five at...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2010
ISSN: 1600-5368
DOI: 10.1107/s1600536810050191