Crystal Structure of an Unexpected Derivative of Curcumin: 2-[2-(4-Acetoxy-3-methoxyphenyl)ethyl]benzothiazole

Abstract

C₁₈H₁₅NO₃S is orthorhombic, P2₁2₁2₁. The unit-cell dimensions at 293 K are a = 7.182(1), b = 11.100(1), c = 20.644(2)Å, V = 1645.7(3)ų, D_x = 1.313 g/cm³, and Z = 4. The R value is R = 0.0552 for 1493 reflections with I > 2σ(I). The title compound has two independent rings: a phenyl ring and a benzothiazole ring bridge via an ethyl moiety. Apart from the C-H…O intermolecular interactions, the molecules in the crystal are packed at normal van der Waals distances.