... werepreincubated with the C-6 bromoacetyl-Glc 1a and bromo-acetyl-Man 1c, the C-6 epoxide 1d, the C -1 epoxide 3a ,the C-6 isothiocyanate 1e and the C -1 isothiocyanate 3d ,and then the residual uptake ... 54 mg 1f (10 0%) was obtained : 1 HNMR(CD3OD) d:7.29(1H,dd,J ¼ 15 .8,4.4Hz,H6),6. 31 (1H, dd, J ¼ 15 .8 ,1. 8 Hz,H7),4.93(1H,d,J ¼ 4.0 Hz,H1), 4 .13 (1H, ddd, J ¼ 9.9, 4.4, 1. 5 Hz, H5), 3.84 (1H, ... with the C-6 bromoacetyl analogues 1a and 1c andwiththeisothiocyanates, more than 10 times slower with the C-6 and C-l chloroacetyl compounds 1b and 3b, and at least 10 0times slower for the...