2,2'-Di-O-acetyl-3,6;3',6'-dianhydro-4,4'-dideoxy-α,α-trehalose

Abstract

The structure of 2,2'-di-O-acetyl-3,6;3',6'-dianhydro-4,4'-dideoxy-α,α-trehalose (2-O-acetyl-3,6-anhydro-4-deoxy-α-D-xylo-hexopyranosyl 2-O-acetyl-3,6-anhydro-4-deoxy-α-D-xylo-hexopyranoside), C 16 H 22 O 9 is described. The molecule has approximate twofold symmetry through O(1). Both pyranoid rings have distorted 1 C 4 chair conformations and the five-membered anhydro rings have distorted 4 E conformations. The structure of the compound appears to show the absence of a sweet AH,B glucophore, which would explain the absence of sweetness in the unsubstituted derivative