Abstract
The crystal structure of the title compound (systematic name: β-d-glucopyranosyl 2α,3β,19α,23-tetrahydroxyolean-12-en-28-oate chloromethane 0.25-solvate monohydrate), C36H58O11·0.25CH3Cl·H2O, contains a triterpenyl moiety esterified with a glucopyranosyl unit, a disordered molecule of chloromethane solvent with a partial site occupancy located about a twofold axis and a water molecule of hydration. Three rings of the triterpenyl moiety adopt classical chair conformations, while one ring exhibits an envelope conformation and one has a flattened chair conformation. The glucopyranosyl ring also adopts a chair conformation. The structure is stabilized by extensive intermolecular hydrogen bonds as well as an intramolecular interaction.
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