organic compounds
Open access
The molecule of the title compound, C19H23N5O3, contains six-membered pyrimidine and five-membered imidazole rings merged into the essentially planar purine skeleton (r.m.s. deviation = 0.01 Å). In the crystal, pairs of N—HN hydrogen bonds link molecules into inversion dimers. The dimers are linked via C—HO hydrogen bonds, forming double-stranded chains propagating along [001]. These chains are linked via C—Hπ and parallel slipped π–π interactions [centroid–centroid distance = 3.467 (1) Å; slippage 0.519 Å], forming a three-dimensional network.
organic compounds
Open access
The title compound, C17H19N5O2, features an almost planar purine skeleton (r.m.s. deviation = 0.009 Å) substituted by a tetrahydrofuran ring, which adopts an envelope conformation. The purine and benzene rings subtend a dihedral angle of 66.70 (3)°. In the crystal, pairs of N—HN hydrogen bonds connect adjacent molecules into inversion dimers. C—HN, C—HO, C—Hπ and π–π interactions [pyrimidine ring centroid–centroid distance = 3.3909 (1) Å] connect the dimers into a three-dimensional architecture.