F. Coutrot et al., Isopropyl 6,7-dideoxy-1,2 : 3,4-di-O-isopropylidene-7{[(S)-1-phenylethyl]amino}-L-glycero-a-D-galacto-octo-pyranuronate, ACT CRYST E, 57, 2001, pp. o519-o520
The stereochemistry of the new chiral centre C7 in the title galactosyl alp
ha -aminoester diastereomer product, C25H37NO7, has been established as S.
The pyranose ring has a twist-boat conformation due to the presence of the
two isopropylidene ketal moieties. The molecule contains no intramolecular
hydrogen bond.