摘要
This report presents evidence indicating that D-galactal (1,2-dideoxy-D-lyxo-hex-1-enopyranose, (I)) is a potent inhibitor of β-D-galactopyranosidases derived from a variety of sources. D-Galactal represents a new type of inhibitor for glycosidases, and it is suggested that the planar half-chair conformation (II or IIa), preferred by D-galactal, is responsible for its inhibitory action. {A figure is presented}. © 1969.