(±)-(3aRS,4SR)-9-Chloro-2-(2-chloro-4-nitro­phenyl)-4-(4-chloro­phenyl)-3a,4-diethoxy-6,8-dimethoxychromano[4,3-d]-Δ^1,9b-1,2,3-thia­diazo­line

The title compound, C₂₇H₂₄Cl₃N₃O₇S, contains a thia­diazo­line ring which is almost planar. The two ethoxy groups bonded at the 3a- and 4-positions are in a trans configuration.

N-[4-(Dimethyl­amino)benzyl­idene]-4-methyl­benzene­sulfonamide

The mol­ecule of the title compound, C₁₆H₁₈N₂O₂S, consists of essentially planar 4-(dimethyl­amino)benzyl­idene and 4-tol­yl fragments bonded through a sulfone S atom, which is approximately coplanar with both fragments. The mean planes of the MeC₆H₄S and Me₂NC₆H₄CH=NS groups are roughly orthogonal and form a dihedral angle of 101.28 (9)°.

2′-Hydr­oxy-3′-(morpholin-4-yl-meth­yl)-4′,6′-dimeth­oxy-2-chloro-chalcone

In the title compound, C₂₂H₂₄ClNO₅, the carbonyl group is in an s-cis configuration with respect to the olefinic double bond. In the crystal structure, there are weak π-stacking inter­actions but there are no significant inter­molecular hydrogen bonds.