40321-75-3Relevant articles and documents
FLAVONOIDS AND ISOFLAVONOIDS FROM ZOLLERNIA PARAENSIS
Ferrari, F.,Botta, B.,Lima, R. Alves De
, p. 1663 - 1664 (1983)
The wood of Zollernia paraensis contains (+)-medicarpin, (+)-vestitol, isoliquiritigenin, formononetin, (+/-)-7-hydroxy-4'-methoxyisoflavanone, (+/-)-liqiuritigenin and (+)-α-2',4,4'-tetrahydroxydihydrochalcone.Key Words Index - Zollernia paraensis; Leguminosae - Papilionoideae; flavonoids; isoflavonoids; α-2',4,4'-tetrahydroxydihydrochalcone.
A Novel α-Hydroxydihydrochalcone from the Heartwood of Pterocarpus angolensis D.C.: Absolute Configuration, Synthesis, Photochemical Transformations, and Conversion into α-Methyldeoxybenzoins
Bezuidenhoudt, Barend C. B.,Brandt, E. Vincent,Roux, David G.
, p. 263 - 269 (2007/10/02)
The absolute configuration of (αR)-α,2'-dihydroxy-4,4'-dimethoxydihydrochalcone from the heartwood of Pterocarpus angolensis D.C. is established.Its structure is substantiated by synthesis and by photochemical conversion of its α-O-tosyl derivative into an α-tosyloxymethyldeoxybenzoin and hence to the α-methyldeoxybenzoin analogue.The photochemical step also leads, amongst others, to α-hydroxymethyldeoxybenzoin, β-hydroxydihydrochalcone, and 2-benzylbenzofuran-3-one analogues depending on the conditions the photolysis.