4-Hydroxy-5-methoxy-N,1-dimethyl-2-oxo-N-[4-(trifluoromethyl)phenyl]-1,2-dihydroquinoline-3-carboxamide
نویسندگان
چکیده
The title compound, C20H17F3N2O4, named tasquinimod, is a second-generation oral quinoline-3-carboxamide analogue, which is currently in phase III clinical trials for the treatment of metastatic prostate cancer. The quinoline unit is almost planar (r.m.s. deviation of fitted atoms = 0.0075 Å). The carboxamide side chain, substituted at position 3, is tilted by 88.07 (7)° to the quinoline plane. Both the methyl and carbonyl groups of this carboxamide side chain are in a syn conformation. The 4-(tri-fluoro-meth-yl)phenyl plane is inclined at 50.62 (17)° to the plane of the carboxamide side chain, and at 87.14 (4)° to the plane of the quinoline ring system. The 4-hy-droxy H atom acts as a double proton donor in an intra-molecular hydrogen bond to the 5-position meth-oxy O atom and in an inter-molecular contact to the 2-oxo group, generating a chain along [010] in the crystal structure.
منابع مشابه
Crystal structures of N-tert-butyl-3-(4-fluorophenyl)-5-oxo-4-[2-(trifluoromethoxy)phenyl]-2,5-dihydrofuran-2-carboxamide and 4-(2H-1,3-benzodioxol-5-yl)-N-cyclohexyl-5-oxo-3-[4-(trifluoromethyl)phenyl]-2,5-dihydrofuran-2-carboxamide
The title compounds, C22H19F4NO4, (I), and C25H22F3NO5, (II), each contain a central nearly planar di-hydro-furan-one ring. The r.m.s. deviation from planarity of these rings is 0.015 Å in (I) and 0.027 Å in (II). The mol-ecules are T-shaped, with the major conformational difference being the O-C-C-O torsion angle [-178.9 (1) in (I) and 37.7 (2)° in (II)]. In the crystal of (I), mol-ecules are ...
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