PROCESS FOR PRODUCING OPTICALLY ACTIVE 2-SUBSTITUENT-OXY-3-(4-SUBSTITUENT-OXYPHENYL)PROPIONIC ACID DERIVATIVE
申请人:Kaneka Corporation
公开号:EP1801224A1
公开(公告)日:2007-06-27
The present invention relates to a process for producing an optically active
2-substituent-oxy-3-(4-substituent-oxyphenyl)propionic acid derivative which comprises stereoselectively reducing an 2-oxo-3-(4-substituent-oxyphenyl)propionic acid by an enzyme and subjecting the thus-obtained optically active 2-hydroxy-3-(4'-substituent-oxyphenyl)propionic acid to esterification of the carboxyl group according to need, then to alkylation of the hydroxyl group and, if necessary, to deprotection of an ether type protective group. The present invention may make it possible to produce an optically active 2-subsituent-oxy-3-(4-substituent-oxyphenyl)propionic acid derivative, which is useful as intermediates for the synthesis of medicinal compounds, efficiently, in a simple and easy manner, and commercially advantageously.
Studies on Lignin and Related Compounds. XXXVI. Ethanolysis of Maple Wood
作者:M. J. Hunter、A. B. Cramer、Harold. Hibbert
DOI:10.1021/ja01871a082
日期:1939.2
Selective methoxy ether cleavage of 2,6-dimethoxyphenol followed by a selective acylation
作者:Enoch A. Adogla、Romy F.J. Janser、Samuel S. Fairbanks、Caitlyn M. Vortolomei、Ranjith K. Meka、Ingo Janser
DOI:10.1016/j.tetlet.2011.10.140
日期:2012.1
group. Under the same reaction conditions 2-methoxyphenol does not get demethylated; a mechanism to account for these findings is proposed. This reaction gives access to a variety of ortho-acylated catechols. Substituted catechols are widely used in supramolecular chemistry and are precursors of pesticides, flavors, and fragrances. Additionally, catechol moieties are found in various natural products