Synthesis of 6-O-Palmitoyl-β-D-Glucosyl β-Sitosterol

Anti-inflammatory effect of 3-O-[(6'-O-palmitoyl)-β-D-glucopyranosyl sitosterol] from Agave angustifolia on ear edema in mice.

In Mexico Agave angustifolia has traditionally been used to treat inflammation. The aim of this study was to measure the anti-inflammatory effect of the extract of A. angustifolia, the isolation and identification of active compounds. From the acetone extract two active fractions were obtained, (AsF13 and AaF16). For the characterization of pharmacological activity, the acute inflammatory model...

20-O-β-d-Xylopyranos­yl(1→6)-β-d-glucopyranosyl-20(S)-protopanaxadiol methanol solvate

The title compound, C(41)H(70)O(12)·CH(4)O, was prepared by microbial transformation. Within the steroid skeleton of the mol-ecule, three six-membered rings exhibit a chair conformation, while the five -membered ring adopts an envelope conformation. The two pyranosyl rings also adopt chair conformations. The mol-ecules are held together by an extensive O-H⋯O hydrogen-bonding network.

Ultraviolet-Induced Isomerization of β-D-Glucosyl o-Hydroxycinnamic Acid on Filter Paper

Asymmetric synthesis of cyclo-archaeol and β-glucosyl cyclo-archaeol.

An efficient asymmetric synthesis of cyclo-archaeol and β-glucosyl cyclo-archaeol is presented employing catalytic asymmetric conjugate addition and catalytic epoxide ring opening as the key steps. Their occurrence in deep sea hydrothermal vents has been confirmed by chromatographic comparison with natural samples.

Synthesis and Solubility of Hydrophilic Derivatives of β- Sitosterol

In this study, hydrophilic derivatives of β-sitosterol, which is known to have potential to reduce blood cholesterol levels, were synthesized by the esterification of poly(ethylene glycol) (PEG) and β -sitosterol with carboxylic functionality in the presence of dehydrating agents and a basic catalyst. By adjusting the molar ratios of reactants in the esterification reaction, hydrophilic β-sitos...