Chemotaxonomic significance of oligostilbenoids isolated from Dryobalanops in the taxonomic of Dipterocarpaceae

• 26 compounds have been isolated from four Dryobalanops species.
• The study supported the placement of Dryobalanops under the tribe Dipterocarpeae
• The chemotaxonomic important of these compounds is also summarized.

A phytochemical investigation of four species of Dryobalanops resulted in the isolation of 26 compounds. This study, reports the existence of several types of oligostilbenoids such as ampelopsin F (9), isoampelopsin F (10), stenophyllol A (15), upunaphenol D (17) and vaticanol C (20) that have not been reported from the tribe Shoreae. The data support previous studies using morphological characters that placed Dryobalanops in the tribe Dipterocarpeae. In addition, this is the first report of compounds with the skeletons of flexuosol A (16) and nepalensinol E (17) from Dipterocarpaceae.

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