9-Furfurylidene-2,3-dimethyl-6,7,8,9-tetrahydro-4<i>H</i>-thieno[2′,3′:4,5]pyrimidino[1,2-<i>a</i>]pyridin-4-one
Khurshed BozorovS. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of Uzbekistan, Mirzo Ulugbek Str. 77, Tashkent 100170, UzbekistanBurkhon ElmuradovS.Yunusov Institute of the Chemistry of Plant Substances Academy of Sciences of, Uzbekistan Mirzo Ulugbek Str., 77, Tashkent 100170, UzbekistanR. Ya. OkmanovS.Yunusov Institute of the Chemistry of Plant Substances Academy of Sciences of, Uzbekistan Mirzo Ulugbek Str., 77, Tashkent 100170, UzbekistanB. TashkhodjaevS.Yunusov Institute of the Chemistry of Plant Substances Academy of Sciences of, Uzbekistan Mirzo Ulugbek Str., 77, Tashkent 100170, UzbekistanK.M. ShakhidoyatovS.Yunusov Institute of the Chemistry of Plant Substances Academy of Sciences of, Uzbekistan Mirzo Ulugbek Str., 77, Tashkent 100170, Uzbekistan
ABI
Аннотация
The title compound, C(17)H(16)N(2)O(2)S, was obtained by condensation of 2,3-dimethyl-thieno[2',3':4,5]pyrimidino[1,2-a]pyridin-4-one with furfural in the presence of sodium hydroxide. One of the methyl-ene groups of the tetra-hydro-pyrido ring is disordered over two positions in a 0.87 (1):0.13 (1) ratio. The thieno[2,3-d]pyrimidin-4-one unit and the furan ring are both planar (r.m.s. deviation = 0.535 Å), and coplanar with each other, forming a dihedral angle of 5.4 (1)°. Four weak inter-molecular hydrogen bonds (C-H⋯O and C-H⋯N) are observed in the structure, which join mol-ecules into a network parallel to (101).
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