biostudies-literatureUnknown68(Pt 6)Li HXThe title compound, C(18)H(22)N(4)O(2)S, contains a substituted pyrimidine ring fused to both a benzene ring and a substituted thioxopyrimidine ring. The pyrimidine and thioxopyrimidine rings adopt distorted chair conformations. In the crystal, adjacent mol-ecules are linked by pairs of N-H?S and N-H?O hydrogen bonds to generate centrosymmetric R(2) (2)(8) and R(2) (2)(16) loops, respectively. This combination leads to [100] chains of mol-ecules.Acta crystallographica. Section E, Structure reports onlineo1821https://www.ebi.ac.uk/biostudies/studies/S-EPMC3379395biostudies-literatureEthyl 2-methyl-6-(propan-2-yl-amino)-4-sulfanyl-idene-3H,11H-pyrimido[1,6-c]quinazoline-1-carboxyl-ate.PMC3379395Wang HMSong YSQu YNLu JBLi HXfalseEthyl 2-methyl-6-(propan-2-yl-amino)-4-sulfanyl-idene-3H,11H-pyrimido[1,6-c]quinazoline-1-carboxyl-ate.The title compound, C(18)H(22)N(4)O(2)S, contains a substituted pyrimidine ring fused to both a benzene ring and a substituted thioxopyrimidine ring. The pyrimidine and thioxopyrimidine rings adopt distorted chair conformations. In the crystal, adjacent mol-ecules are linked by pairs of N-H?S and N-H?O hydrogen bonds to generate centrosymmetric R(2) (2)(8) and R(2) (2)(16) loops, respectively. This combination leads to [100] chains of mol-ecules.2012-01-01T00:00:00Z2012 Jun2021-02-21T04:03:31Z2019-03-27T00:54:44ZS-EPMC33793952271959310.1107/S1600536812019952