A novel α-hydroxydihydrochalcone from the heartwood of Pterocarpus angolensis D.C.: absolute configuration, synthesis, photochemical transformations, and conversion into α-methyldeoxybenzoins
作者:Barend C. B. Bezuidenhoudt、E. Vincent Brandt、David G. Roux
DOI:10.1039/p19810000263
日期:——
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
(α的绝对构型[R)-α,2'-二羟基-4,4'- dimethoxydihydrochalcone从心材紫檀angolensis DC成立。通过合成以及通过将其α- O-甲苯磺酰基衍生物光化学转化为α-甲苯磺酰氧基甲基脱氧安息香素并因此转化为α-甲基脱氧安息香类似物来证实其结构。根据光解的条件,光化学步骤还导致α-羟甲基脱氧安息香素,β-羟基二氢查耳酮和2-苄基苯并呋喃-3-酮类似物。