申请人:Brigham Young University
公开号:US07714161B2
公开(公告)日:2010-05-11
The present invention includes methods for preparing resveratrol, resveratrol esters and substituted and unsubstituted stilbenes of the formula given below; where each Y is —O or halogen, each Z is —O or halogen, each n and each m is independently the value of 0, 1, 2, 3, 4 or 5, each A and each B is independently selected from Pn, R or absent, each V and each W is independently selected from Pn, straight or branched alkyl of from (2) to (6) carbon atoms and cycloalkyl of from (3) to (8) carbon atoms, alkoxy, phenyl, benzyl or halogen, R is independently selected from the group comprising alkyl with at least one carbon atom, aryl and aralkyl, Pn is an alcohol protecting group and diastereoisomers of the foregoing. The compounds are made from a multi-step process including a N-heterocyclic carbene-type ligand coupling in the presence of a base with benzyol halide and styrene coupling partners. These compounds show increased stability for use in the food, cosmetic and pharmaceutical industries.
本发明涉及制备白藜芦醇、白藜芦醇酯和下列公式的取代和未取代的苯乙烯类化合物的方法;其中每个Y是-O或卤素,每个Z是-O或卤素,每个n和每个m独立地取值为0、1、2、3、4或5,每个A和每个B独立地选择自Pn、R或缺失,每个V和每个W独立地选择自Pn、(2)至(6)碳原子的直链或支链烷基和(3)至(8)碳原子的环烷基、烷氧基、苯基、苄基或卤素,R独立地选择自包括至少一个碳原子的烷基、芳基和芳基烷基的群,Pn是醇保护基和上述化合物的对映异构体。这些化合物通过多步过程制备,包括在碱存在下与苯乙烯偶联反应的N-杂环卡宾型配体偶联反应。这些化合物在食品、化妆品和制药行业中具有增加的稳定性。