THE CHEMISTRY OF D-APIOSE: PART II. THE CONFIGURATION OF D-APIOSE IN APIIN

Abstract

The tri-O-methyl-D-apiose derivative obtained from the hydrolysis products of methylated apiin was found to be identical with 2,3,4-tri-O-methyl-D-apio-D-furanose prepared synthetically. Periodate oxidation studies support the suggested cis relationship of the hydroxyl groups at C₂ and C₃ of the apiose moiety in apiin, and consideration of optical rotation data suggest that a β-type linkage unites the D-apiosyl unit to C₂ of the D-glucopyranose residue in apiin.