High impact information on Theales

• Here we present observations of large emissions of methyl chloride from some common tropical plants (certain types of ferns and Dipterocarpaceae), ranging from 0.1 to 3.7 microg per gram of dry leaf per hour [1].
• On the basis of these preliminary measurements, the methyl chloride flux from Dipterocarpaceae in southeast Asia alone is estimated at 0.91 Tg yr-1, which could explain a large portion of missing methyl chloride sources [1].
• Twenty resveratrol (3,5,4'-trihydroxystilbene) (Res) derivatives, which were isolated from stem bark of Vatica rassak (Dipterocarpaceae), were evaluated for in vitro cytotoxicity against a panel of human tumor cell lines [2].
• The allocation to defense by Borneo ironwood was compared to two emergent species of Dipterocarpaceae, the dominant family in this forest community [3].
• A new coumarin, 5-(4-hydroxyphenethenyl)-4,7-dimethoxycoumarin (1) was isolated from the combined ethyl acetate extracts of the root bark, root wood and stem bark of Monotes engleri, and found to be cytotoxic against two cell lines in a human tumor panel [4].

Associations of Theales with chemical compounds

• A, B and C, as well as three known stilbenoids, resveratrol, piceid and epsilon-viniferin were isolated from the stem bark of Vatica rassak (Dipterocarpaceae) [5].
• Six flavonoids, among them a new dihydroflavonol, 6,8-diprenylaromadendrin (1), and the flavonol 6,8-diprenylkaempferol (3), have been isolated from the organic extract of Monotes africanus [6].
• Three new resveratrol oligomers, cotylelophenol C (1) (resveratrol tetramer) and cotylelosides A (2) and B (3) (O-glucosides of resveratrol trimer), together with four known glucosides of resveratrol oligomers (vaticasides A, B, C, D) and piceid, were isolated from an acetone soluble part of stem of Cotylelobium lanceolatum (Dipterocarpaceae) [7].

Gene context of Theales

• Inhibitory effects of resveratrol derivatives from dipterocarpaceae plants on tyrosinase activity [8].

References