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Acta Cryst. (2014). C70, 388-391
[ doi:10.1107/S2053229614003751 ]

Weak C-H...X (X = O, N) hydrogen bonds in the crystal structure of di­hydro­berberine

S. Pingali, J. P. Donahue and F. Payton-Stewart

Synopsis: Di­hydro­berberine, a reduced form of pharmacologically important berberine, crystallizes from ethanol without inter­stitial solvent. Although lacking classical O-H or N-H donors, the packing in the crystalline state is clearly governed by C-H...N and C-H...O hydrogen bonds involving the two acetal-type C-H bonds of the 1,3-dioxole ring.

Formula: C20H19NO4


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