The readily available auxiliary alcohol, benzyl 2,3-O-isopropylidene-β-L-arabinopyranoside (1), is shown to be superior to its methyl-congener (2) in asymmetric induction capacity, attributable to a more efficient shielding by the phenyl ring.
T. K. M. Shing and P. Lloyd-Williams, J. Chem. Soc., Chem. Commun., 1987, 423 DOI: 10.1039/C39870000423
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