(1S*,2R*,4aS*,6aS*,6bR*,10S*,12aR*,14aS*)-10-Hydroxy-1,2,6a,6b,9,9,12a-heptamethylperhydropicene-4a,14a-carbolactone
نویسندگان
چکیده
The title compound, C(30)H(48)O(3), was extracted from the plant Dracocephalum rupestre Hance. The mol-ecule contains five fused cyclo-hexane rings and one five-membered lactone ring. Inter-molecular O-H⋯O hydrogen bonds between the hydroxyl and carbonyl groups link the mol-ecules into chains along [010]. The absolute structure has not been determined.
منابع مشابه
Neoirietriol
The title compound {systematic name: (1R,4S,4aS,7R,8aR)-4-bromo-7-[(1S,3R)-3-bromo-1,2,2-trimethyl-cyclo-pent-yl]-1,4a-dimethyl-deca-hydro-naphthalene-1,7,8a-triol}, C(20)H(34)Br(2)O(3), is a neoirieane-type bromo-diterpenoid isolated from Laurencia yonaguniensis Masuda et Abe, species inedita. The absolute stereochemistry was established as (1S,4R,5R,7R,10S,11S,14R). The structure displays int...
متن کامل(2R*,3R*,4aS*,6aR*,11aS*,11bS*)-Methyl 2-acetoxy-11b-hydroxy-3,7-dimethyl-1,2,3,4,4a,5,6,6a,7,11,11a,11b-dodecahydrophenanthro[3,2-b]furan-3-carboxylate
In the title compound, C(22)H(30)O(6), the conformation of the mol-ecule is dictated by an intra-molecular C-H⋯O contact. The crystal structure is stabilized via inter-molecular C-H⋯O, O-H⋯O and C-H⋯π contacts.
متن کامل(2R,3R,4aS,6S,7S,8aS)-4a-Fluoro-8a-hydroxyperhydronaphthalene-2,3,6,7-tetrayl tetraacetate
The title compound, C(18)H(25)FO(9), exhibits a similar unit cell and packing to the α polymorph of axial 4a,8a-dihy-droxy-per-hydro-naph-tha-lene-2,3,6,7-tetrayl tetraacetate. The carbonyl O atoms of two of the four acetate groups in the molecule are disordered over two sites with occupancy ratios of 0.59 (4):0.41 (4) and 0.57 (6):0.43 (6). Crystal packing is effected via inter-molecular O-H⋯O...
متن کاملtert-Butyl N-hydroxy-N-[(1S*,2R*)-2-(1-naphthyl)cyclopent-3-en-1-yl]carbamate
The relative stereochemistry of the title compound, C(20)H(23)NO(3), was established by X-ray analysis. The asymmetric unit contains two independent mol-ecules. In the crystal structure, each type of mol-ecule forms a centrosymmetric dimer via pairs of inter-molecular O-H⋯O hydrogen bonds, resulting in an R(2) (2)(10) loop in each case.
متن کاملrac-(1S,2R)-Diethyl 6-hydroxy-1-(4-methoxyphenyl)-3-oxo-2,3-dihydro-1H-benzo[f]chromen-2-yl]phosphonate
In the title compound, C(24)H(25)O(7)P, the δ-valerolactonyl ring exists in a distorted screw-boat conformation with the diethoxy-phosphoryl substituent occupying an axial position. The latter adopts an almost syn-periplanar conformation around the P-C bond. The mol-ecules form centrosymmetric dimers connected by O-H⋯O hydrogen bonds.
متن کامل