Stereoselective route to produce tris-O-substituted-(E)-1-(3,5-dihydroxyphenyl)-2-(4-hydroxyphenyl)ethene, an intermediate in the synthesis of trans-resveratrol
申请人:Orchid Chemicals & Pharmaceuticals Limited, India
公开号:US06552213B1
公开(公告)日:2003-04-22
The present invention relates to a new stereoselective method for the preparation of tris-O-substituted-(E)-1-(3,5-dihydroxyphenyl)-2-(4-hydroxyphenyl)ethene derivative of the formula (I) which is a key intermediate in the synthesis of trans-resveratrol (I, R2=R2=R3=H). The invention also provides a method for the exclusive synthesis of trans-isomer of compounds of formula (I) without any contamination of cis-isomer.
本发明涉及一种新的立体选择性制备三-O-取代-(E)-1-(3,5-二羟基苯基)-2-(4-羟基苯基)乙烯衍生物的方法,其结构式为(I),是合成反式白藜芦醇的关键中间体(I,R2=R2=R3=H)。本发明还提供了一种仅合成结构式(I)化合物的反式异构体的方法,没有任何顺式异构体的污染。