2-Methoxy-3-methyl-6-oxo-4-(2,3,4-tri-O-acetyl-β-D-xylopyranosylamino)-1,6-dihydropyrimidine-5-carbaldehyde 0.065-hydrate and 2-methylsulfanyl-6-oxo-4-(2,3,4-tri-O-acetyl-β-D-xylopyranosylamino)-1,6-dihydropyrimidine-5-carbaldehyde: hydrogen-bonded structures in one or three dimensions

Abstract

The organic components of 2-methoxy-3-methyl-6-oxo-4-(2,3,4-tri-O-acetyl-beta-D-xylopyranosylamino)-1,6-dihydropyrimidine-5-carbaldehyde 0.065-hydrate, C(18)H(23)N(3)O(10).0.065H(2)O, (I), which crystallizes with Z' = 2 in the space group P2(1)2(1)2(1), are linked into a three-dimensional framework structure by a combination of four C-H...O hydrogen bonds. In 2-methylsulfanyl-6-oxo-4-(2,3,4-tri-O-acetyl-beta-D-xylopyranosylamino)-1,6-dihydropyrimidine-5-carbaldehyde, C(17)H(21)N(3)O(9)S, (II), where the pyrimidine fragment is disordered with two different conformations for the methylsulfanyl substituent, molecules are linked into chains of rings by a combination of N-H...O and C-H...O hydrogen bonds.