Buy article online - an online subscription or single-article purchase is required to access this article.
organic compounds
The structure of the O-methyl glycoside of the naturally occurring 6-O-[(R)-1-carboxyethyl]-α-D-galactopyranose, C10H18O8, has been determined. The absolute configuration was considered as R at the 1-carboxyethyl moiety which previously had been assigned by synthesis. This absolute configuration is consistent both with the determined Flack parameter [0.04 (43)] and the previoulsy known configuration of D-galactose. The conformation of the torsion angle ω, O5-C5-C6-O6, is shown to be gauche-trans.