Synthesis 2001(14): 2170-2174
DOI: 10.1055/s-2001-18069
PAPER
© Georg Thieme Verlag Stuttgart · New York

A Regioselective Synthesis of Genistein 4’-O-Ribofuranosides

Jerzy Boryski*a, Grzegorz Grynkiewiczb
a Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61704 Poznan, Poland
b Pharmaceutical Research Institute, Rydygiera 8, 01793 Warsaw, Poland
Fax: +48(61)8520532; e-Mail: jboryski@ibch.poznan.pl;
Further Information

Publication History

Received 26 June 2001
Publication Date:
09 August 2004 (online)

Abstract

A direct glycosylation reaction of biologically significant isoflavone, genistein (1) with 1,2,3,5-tetra-O-acetyl-β-d-ribofuranose (2) in the presence of tin tetrachloride gave a satisfactory yield of a mixture of 4’-O-α- (3a) and 4’-O-β-d-ribofuranosides (3b), in the ratio 1:2 respectively. After deacetylation, anomers 4a and 4b were separated by chromatographic means. The results are compared with ribosylation of phenol and the regio- and stereoselectivity of genistein glycosylation are discussed.