Photochemistry synthesis. Part 2: Enantiomerically pure polyhydroxy-1,1,3-triarylpropan-2-ols
作者:Anke Wilhelm-Mouton、Susan L. Bonnet、Yuanqing Ding、Xing-Cong Li、Daneel Ferreira、Jan H. van der Westhuizen
DOI:10.1016/j.jphotochem.2011.10.019
日期:2012.1
A new method to open the heterocyclic ring of flavan-3-ols via photolytic cleavage of the ether bond, with stereoselective trapping of the intermediates with phloroglucinol to obtain phloroglucinol grafted derivatives of flavan-3-ols, was developed. Photolysis of catechin and epicatechin, respectively, in the presence of phloroglucinol yielded the enantiomeric (1S,2S)- and (1R,2R)-1,3-di(2,4,6-trihydroxyphenyl)-1-(3