Abstract

A new sesquiterpene glycoside, (−)-epi-α-bisabolol 6-deoxy-β-d-gulopyranodide (1), has been isolated from the glandular trichome exudate of Brillantaisia owariensis (Acanthaceae). The structure of compound 1 was determined by spectroscopic analysis as well as acidic hydrolysis of 1 leading to (−)-epi-α-bisabolol (2) and 6-deoxy-d-gulose (3). This is the first study to analyze secondary metabolites from glandular trichome exudates of plants belonging to the Acanthaceae family. 6-Deoxygulopyranoside is the first example of an epi-α-bisabolol glycoside of plant origin.

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