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In the title hemisolvate, C25H28N2O7S·0.5C4H8O2, the thio-morpholine ring adopts a chair conformation, with the exocyclic N-C bond in an equatorial orientation. The dihedral angle between the coumarin ring system (r.m.s. deviation = 0.044 Å) and the furan ring is 64.84 (6)°. An intra-molecular N-H⋯O hydrogen bond closes an S(6) ring. The ethyl acetate solvent mol-ecule is disordered about a crystallographic inversion centre. In the crystal, the components are linked by C-H⋯O and C-H⋯S hydrogen bonds, generating a three-dimensional network.

acta crystallographica. section e, crystallographic communications

Crystal structure of 3,4-dimethyl 2-(<i>tert</i>-butylamino)-5-[2-oxo-4-(thiomorpholin-4-yl)-2<i>H</i>-chromen-3-yl]furan-3,4-dicarboxylate ethyl acetate hemisolvate

Crystal structure of 3,4-dimethyl 2-(tert-butylamino)-5-[2-oxo-4-(thiomorpholin-4-yl)-2H-chromen-3-yl]furan-3,4-dicarboxylate ethyl acetate hemisolvate