Enantioselective synthesis of flavonoids. Part 2. Poly-oxygenated α-hydroxydihydrochalcones and circular dichroic assessment of their absolute configuration
作者:Jan A.N. Augustys、Babend C.B. Bezuidenhoudt、Annelie Swanepoel、Daneel Ferreira
DOI:10.1016/s0040-4020(01)86778-8
日期:——
Chiral chalcone epoxides exhibiting the oxygenation patterns of naturally occurring flavonoids and isoflavonoids were transformed into the corresponding α-hydroxydihydrochalcones. The availability of both enantiomers permitted assessment of the absolute configuration at the single chiral centre by CD spectroscopy; such protocol being applicable to defining the configuration of some naturally occurring
表现出天然黄酮和异黄酮的氧化模式的手性查尔酮环氧化物被转化为相应的α-羟基二氢查耳酮。两种对映异构体的可用性使得可以通过CD光谱法评估单个手性中心的绝对构型;这种方案适用于定义一些天然存在的类似物的构型,其中两个是新化合物。