%0 Journal Article
%T Synthesis and Biological Activities of Scleropentaside D.
%A Fan NL
%A Zhang L
%A Peng CY
%A Liao WL
%A Hu XG
%J J Org Chem
%V 89
%N 12
%D 2024 Jun 21
%M 38861461
%F 4.198
%R 10.1021/acs.joc.4c00755
%X We report the first total synthesis of scleropentaside D, a unique C-glycosidic ellagitannin, from the ketal derivative of scleropentaside A employing site-selective O4-protection of C-acyl glycoside and copper-catalyzed oxidative coupling reaction of galloyl groups as the key steps. Our study confirms the proposed structure of this natural product, scleropentaside D, and demonstrates its effectiveness as an inhibitor of α-glycosidase.