Oligostilbenoids from Vatica umbonata (Dipterocarpaceae)

Abstract

Vatica is a relatively large genus belonging to the family Dipterocarpaceae and is distributed mainly in Southeast Asia (Symington, 1974). This genus, as well as other dipterocarp genera such as Shorea, Hopea, and Vateria, have proven to be a rich source of oligostilbene compounds derived from a stilbene, resveratrol (4,30,50trihydroxystilbene) (Sotheeswaran and Pasupathy, 1993; Hakim, 2002; Zgoda-Pols et al., 2002; Ito et al., 2003a,b). As part of a systematic study on the chemistry of the Indonesian dipterocarps (Aminah et al., 2002; Syah et al., 2003), we had collected samples of the tree barks of Vatica umbonata Burck. in September 2000 from the Experimental Garden of Kaliurang, Yogyakarta, Indonesia. The plant was identified by the staff at the Herbarium Bogoriense, Bogor, Indonesia, and a voucher specimen (KOBA-DIPTO-DIY01) was deposited at the Herbarium Bandungense, Department of Biology, Institut Teknologi Bandung, Indonesia.