[Structure identification of jujuboside D]

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Organic Chemistry

Context:

• Ziziphus jujuba Mill var. Spinosa is a plant with potential medicinal properties.
• Understanding its chemical constituents is crucial for pharmacological research.
• Previous studies may not have fully elucidated its complex phytochemical profile.

Purpose:

• To isolate and identify the chemical constituents of Ziziphus jujuba Mill var. Spinosa.
• To characterize novel compounds and previously unreported constituents.
• To contribute to the chemotaxonomic understanding of the Ziziphus genus.

Summary:

• Five compounds were isolated from Ziziphus jujuba Mill var. Spinosa using chromatographic techniques and spectral analysis.
• The identified compounds include jujuboside D (a new compound), jujuboside A, 5,7,4'-trihydroxyflavonol-3-O-beta-D-rhamnopyranosyl-(1-->6)-beta-D-glucopyranoside, 6'''-coumaroylspinosin, and phenylalanine.
• Jujuboside D is reported as a new compound, while 6'''-coumaroylspinosin is described as a rotamer for the first time. Compounds 3 and 5 are reported from this plant for the first time.

Impact:

• This research expands the knowledge of Ziziphus jujuba phytochemistry.
• The identification of novel and previously unreported compounds may lead to the discovery of new bioactive molecules.
• The findings provide a basis for further investigation into the pharmacological activities and potential applications of these constituents.