A modified oligostilbenoid, diptoindonesin C, fromShorea pinangaScheff.

Abstract

A new oligostilbenoid, diptoindonesin C, has been isolated from the tree bark of Shorea pinanga Scheff., along with the two known oligostilbenoids gnetin H and hopeaphenol, and a known coumarin scopoletin. The new oligostilbenoid was moderately active against brine shrimps Artemia salina.

Natural stilbenoids: distribution in the plant kingdom and chemotaxonomic interest in Vitaceae

“…f., produces monomers and resveratrol oligomers, dimers to trimers, glycosylated or not (ESI † Table S1). Oligomers, mirabilols A-B, and the O-glycoside oligomers, mirabilosides A-F, have only been identified in this species, 63,64 while others have been found in other families; for instance, the resveratrol dimer O-glycoside, gnemonoside B, in Gnetaceae, 65 the resveratrol trimer, gnetin E, in Gnetaceae 65 and in Vitaceae (Cyphostemma genus) 66 or the resveratrol trimer, gnetin H, in Dipterocarpaceae (Shorea genus), 67 Vitaceae (Vitis genus) 68 and Paeoniaceae (Paeonia genus). 69 However, stilbenes were not identified in the third Gnetales family, Ephedraceae.…”

Cytotoxic oligostilbenes from Shorea hopeifolia

“…It was reported for the first time in the family of Dipterocarpaceae from Shorea worthingtonii and Vatica obscura (Gunawardana et al, 1979). In addition the isolation was also reported from S. talura (Venkatramaiah and Rao, 1983) and Shorea pinanga Screff (Syah et al, 2009). The cytotoxic activities of the crude extract, (-)-ε-viniferin, (-)-ampelopsin E, (-)-hopeaphenol, shoreaphenol and scopoletin were evaluated against Chang and HepG2 cell lines.…”

Hopeanolin and other Resveratrol Oligomers from the Twigs of Shorea acuminata: Antioxidant Propertiaes and Chemotaxonomic Significance

“…From literature reports, compound 1 which was first isolated from H. exalata [7] has been successfully isolated for the first time from the genus Shorea in this study, whereas (-)-laevifonol which commonly had been isolated from Shorea species that is S. laeviforia [8], S. pinanga [13], S. balangeran [14], S. parvifolia [15], S. macroptera [16] and S. selanica [17] also found in H. nutans [18]. Instead, vaticanol B which had been isolated more frequently in Hopea that is H. utilis [19], H. sangal [20], H. drybalanoides [21], H. gregaria [22], H. mengarawan [23] and H. nutans [18] also found in a few species of Shorea that is S. selanica [14] and S. assamica [24].…”