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...

In the title compound, C(25)H(36)N(2)O(2)S, the cyclo-hexane and morpholine rings adopt chair conformations. The cyclo-hexene and cyclo-hexane rings form a trans ring junction with the two methyl groups in axial positions. The N-H and C=O bonds in the urea group are anti to each other. The crystal structure is stabilized by inter-molecular N-H⋯O hydrogen bonds.

The title compound, C(30)H(50)O(5), was isolated from the bark of Aglaia smithii. There are two independent mol-ecules in the asymmetric unit that differ in the orientation of the isopropenyl group attached to the cyclo-hexane ring. The cyclo-hexane rings in both mol-ecules adopt chair conformations, whereas the cyclo-pentane and tetra-hydro-furan rings adopt envelope conformations. The indepen...

In the title compound, [Fe(C(5)H(5))(C(14)H(13)O(2))], the dihedral angle between the phenyl ring and the unsubstituted cyclo-petadienyl ring is 85.0 (2)°while that between the phenyl ring and the substituted cyclo-petadienyl ring is 83.6 (2)°. The dihedral angle between the two cyclo-penta-1,3-diene rings of the ferrocene unit is 2.2 (2)°. The mol-ecules are stabilized by inter-molecular O-H⋯O...

The title compound, C(12)H(18)N(2)O, was synthesized by the reaction of cyclo-hexa-none and 2-amino-cyclo-pent-1-enecarbonitrile. In the mol-ecule of the title compound, the six-carbon ring displays a chair conformation, the six-membered 1,3-diaza ring and the cyclo-pentene ring both assume envelope conformations. Supra-molecular aggregation is achieved by N-H⋯O hydrogen bonds.

20-Hydroxyecdysone, the arthropod moulting hormone, was biotransformed by the fungus Curvularia lunata NRRL 2178 to the rare ecdysteroid, 2-dehydro-3-epi-20-hydroxyecdysone, and the novel 3alpha,9alpha-cyclo ecdysteroid analogue, (20R,22R)-3beta,14alpha,20,22,25-pentahydroxy-3alpha,9alpha-cyclo-5beta-cholest-7-en-2,6-dione in 14 and 44% yields, respectively. Ponasterone A and pterosterone were ...

UNLABELLED Vibrio cholerae is an aquatic organism that causes the severe acute diarrheal disease cholera. The ability of V. cholerae to cause disease is dependent upon the production of two critical virulence determinants, cholera toxin (CT) and the toxin-coregulated pilus (TCP). The expression of the genes that encode for CT and TCP production is under the control of a hierarchical regulatory ...

A new tetra-dentate chiral Schiff base ligand, C(16)H(26)N(2)O(2), has been synthesized by the reaction of acetyl-acetone with (1R,2R)-(-)-1,2-diamino-cyclo-hexane. Both of the mol-ecules in the asymmetric unit are of the same chirality (R configuration), since the absolute configuration was determined by the starting reagent (1R,2R)-(-)-1,2-diamino-cyclo-hexane. The six-membered cyclo-hexane r...

A marine bacterium M44 was separated from 30 m deep seawater in the East China Sea (26° 28.3' N 122° 29.0' E) in 2006. 16S rDNA gene sequence comparison showed that the strain M44 was a member of the genus Sulfitobacter and highly similar to KMM 3554(T). A series of experiments demonstrated that this strain M44 had many distinctive characteristics: its cells were gram-negative and mesophilic; i...

The title salt, C18H26N42+·2Cl-, was obtained by the protonation of N,N-bis-(pyridin-4-ylmeth-yl)cyclo-hexane-1,4-di-amine with hydro-chloric acid in ethanol. The asymmetric unit consists of one half of an N,N-bis-(pyridin-3-ylmeth-yl)cyclo-hexane-1,4-di-ammonium dication, with a crystallographic inversion centre located at the centre of the cyclo-hexyl ring, and a chloride anion. The central c...