1,4a,7-Trimethyl-7-vinyl-1,2,3,4,4a,4b,5,6,7,8,10,10a-dodecahydrophenanthrene-1-carboxylic acid
نویسندگان
چکیده
منابع مشابه
1,4a,7-Trimethyl-7-vinyl-1,2,3,4,4a,4b,5,6,7,8,10,10a-dodecahydrophenanthrene-1-carboxylic acid
The title compound, also known as isopimaric acid, C(20)H(30)O(2), was isolated from slash pine rosin. There are two unique mol-ecules in the unit cell. The two cyclo-hexane rings have classical chair conformations. The cyclo-hexene ring represents a semi-chair. The mol-ecular conformation is stabilized by weak intra-molecular C-H⋯O hydrogen-bonding inter-actions. The mol-ecules are dimerized t...
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In the title compound, C(10)H(10)N(4)O(4)·0.5H(2)O, the two rings of the pteridine system are nearly coplanar [dihedral angle = 4.25 (9)°]. The atoms of the carboxyl group are also coplanar with the pteridine unit [r.m.s. deviation from the mean plane of the pteridine skeleton = 0.092 (2) Å]. In the crystal, the presence of the water molecule of crystallization (O atom site symmetry 2) leads to...
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The title compound, C(20)H(32)O(2), has been isolated from hydrogenated rosin. There are two independent mol-ecules in the asymmetric unit. In each mol-ecule, the cyclo-hexane ring assumes a chair conformation, while the two cyclo-hexene rings adopt half-chair and envelope conformations. Inter-molecular O-H⋯O hydrogen bonding between carboxyl groups links pairs of independent mol-ecules into di...
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In the mol-ecule of the title compound, C(11)H(12)O(2), the cyclo-hexane ring adopts a half-chair conformation. In the crystal structure, mol-ecules are linked into centrosymmetric dimers by pairs of O-H⋯O hydrogen bonds, and the dimers are linked together by π-π inter-actions [centroid-centroid distance = 3.8310 (13) Å] and C-H⋯O bonds.
متن کامل1-Cyclopropyl-6-fluoro-7-(4-nitrosopiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
The title compound, C(17)H(17)FN(4)O(4), is a derivative of ciprofloxacin [1-cyclo-propyl-6-fluoro-4-oxo-7-(1-piperazin-yl)-1,4-dihydro-quinoline-3-carboxylic acid]. The crystal packing is stabilized by inter-molecular C-H⋯O hydrogen bonds together with π-π electron ring inter-actions [centroid-centroid separations between quinoline rings of 3.5864 (11) and 3.9339 (13) Å]. A strong intra-molecu...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2009
ISSN: 1600-5368
DOI: 10.1107/s1600536809019308