6-DEOXY-6-N,N-DIMETHYLDITHIOCARBAMOYL-1,2-3,4-DI-O-ISOPROPYLIDENE ALPHA-D-GALACTOPYRANOSE

C-15H25NO5S2, M(r) = 363.5, monoclinic, P2(1), a = 9.803 (5), b = 10.50 (1), c = 10.090 (3) angstrom, beta = 116.38 (3)-degrees, V = 930 (2) angstrom 3, Z = 2, D(x) = 1.297 Mg m-3, lambda-(Mo K-alpha-BAR) = 0.7107 angstrom, mu = 0.295 mm-1, F(000) = 388, T = 294 (1) K, R = 0.042 for 1380 independent observed reflections. As expected, the dimethyldithiocarbamoyl group is approximately planar. In this group, the shortest C-S and C-N distances, 1.658 (5) and 1.321 (6) angstrom respectively, indicate the presence of a delocalized orbital. One of the two five-membered rings (A ring) has an envelope form and the other (C ring) a half-chair form. The pyranosyl ring has a skew-boat conformation. The cohesion of the structure is due to van der Waals interactions.