title: 2-Dicyclo-hexyl-amino-3-phenyl-5,6-di-hydro-8H-thio-pyrano[4',3':4,5]thieno[2,3-d]pyrimidin-4(3H)-one.
abstract: In the title compound, C(27)H(33)N(3)OS(2), the dihedral angle between the two fused rings of the thieno[3,2-d]pyrimidine system is 3.73 (9)°. The phenyl ring is twisted with respect to the pyrimidine ring [dihedral angle = 71.60 (10)°] and the thio-pyran ring shows an envelope conformation with the S atom as the flap. An intra-molecular C-H⋯O inter-action occurs. In the crystal, inversion dimers linked by pairs of C-H⋯O hydrogen bonds occur.
authors.forename: Xizhen
authors.initials: X
authors.lastname: Liang
authors.forename: Yueming
authors.initials: Y
authors.lastname: Zhou