title: (1S)-1,2-O-Benzyl-idene-α-d-glucurono-6,3-lactone.
abstract: X-ray crystallographic analysis has established that the major product from the protection of d-glucoronolactone with benzaldehyde is (1S)-1,2-O-benzyl-idene-α-d-glucurono-6,3-lactone, C(13)H(12)O(6), rather than the R epimer. The crystal structure exists as O-H⋯O hydrogen-bonded chains of mol-ecules lying parallel to the a axis. The absolute configuration was determined by the use of d-glucuronolactone as the starting material.
authors.forename: Sarah F
authors.initials: SF
authors.lastname: Jenkinson
authors.forename: Daniel
authors.initials: D
authors.lastname: Best
authors.forename: Alexander C
authors.initials: AC
authors.lastname: Weymouth-Wilson
authors.forename: Robert A
authors.initials: RA
authors.lastname: Clarkson
authors.forename: George W J
authors.initials: GW
authors.lastname: Fleet
authors.forename: David J
authors.initials: DJ
authors.lastname: Watkin