摘要:
Glycosides (alpha- and beta-D-glucosides and -D-galactosides) derived from three pesticides, 2-tert-butyl-2,4-dinitrophenol,2,6-dibromo-4-cyanophenol, and 5-(2,4-dichlorophenoxy)-2-nitrobenzoic acid, were synthesized from 2,3,4,6-tetra-O-chloroacetyl-D-gluco- and -D-galactopyranose by use of the Mitsunobu reaction. It was shown that selectivity for the beta-D anomer increases with the pK(a) of the acid component.