Abstract
Phytochemical investigation of the dried leaves and twigs of Ligustrum vulgare has led to the isolation of the secoiridoid glucosides, (2′′ R)- and (2′′ S)-10-hydroxy-2′′-methoxyoleuropeins ( 1 and 2), and the secoiridoid aglycones, ligustrohemiacetals A ( 3) and B ( 4). Their structures were elucidated by spectroscopic and chemical means. Enzymatic hydrolysis of 10-hydroxyoleuropein to the analog of ligustrohemiacetals A and B led to the structural revision of jasmolactones.
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