申请人:Andrus Merritt B.
公开号:US20080255382A1
公开(公告)日:2008-10-16
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 P
n
, R or absent, each V and each W is independently selected from P
n
, 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, P
n
is an alcohol protecting group and diastereoisomers of the foregoing. The compounds are made from a multi-step process including a N-heterocyclic carbon-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.
本发明涉及一种制备白藜芦醇、白藜芦醇酯和给定以下结构式的取代和未取代的stilbenes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独立地从Pn、R或缺席中选择,每个V和每个W独立地从Pn、由(2)到(6)个碳原子的直链或支链烷基和由(3)到(8)个碳原子的环烷基、烷氧基、苯基、苄基或卤素中选择,R独立地从包括至少一个碳原子的烷基、芳基和芳基烷基的群体中选择,Pn是醇保护基和上述化合物的对映异构体。这些化合物是通过多步过程制备的,其中包括在碱存在下与苄基卤和苯乙烯偶联合成N-杂环碳型配体偶联。这些化合物在食品、化妆品和制药行业中显示出增强的稳定性。