H. Otsuka et al., ABSOLUTE STRUCTURE OF IONOL GLUCOSIDE - A SINGLE-CRYSTAL X-RAY-ANALYSIS OF DENDRANTHEMOSIDE-A PENTAACETATE, Chemical and Pharmaceutical Bulletin, 41(10), 1993, pp. 1860-1862
By means of single crystal X-ray analysis of dendranthemoside A pentaa
cetate, the absolute configuration of the asymmetric center at the 9-p
osition was determined to be R. The configurations of three other posi
tions, which had been determined to be 3S, 5R and 6S by application of
beta-D-glucosylation induced shift trends, were verified.