408506-93-4Relevant articles and documents
First total synthesis of the natural product 1,3-di-O-galloyl-4,6-O-(S)-hexahydroxydiphenoyl-β-D-glucopyranoside
Khanbabaee, Karamali,Gro?er, Mathias
, p. 1159 - 1163 (2007/10/03)
A straightforward synthesis of the natural product 1,3-di-O-galloyl-4,6-O-(S)-hexahydroxy-diphenoyl-β-D-glucopyranoside (7) was achieved based on a regio- and stereoselective galloylation of the 1,3-diol derivative of D-glucopyranose 2 to the β-D-glucopyranoside 3. Subsequent acylation of monoester 3 to the diester 4 followed by the removal of the benzylidene protecting group led to the formation of the corresponding 4,6-diol derivative of D-glucopyranoside 5. A further double esterification of the (rac)-hexabenzyloxydiphenic acid with the appropriately substituted 4,6-diol derivative of D-glucopyranoside 5 allowed us to assemble the carbon framework of the target 7. Hydrogenolysis of the tetraester 6 as the precursor of the target compound over palladium on charcoal gave the natural product 7.