Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 6 (June 2013)

organic compounds

Acta Cryst. (2013). E69, o833    [ doi:10.1107/S1600536813011604 ]


D.-L. Wang, X.-H. Cai, P. Huang and H.-P. Huang

Abstract: The title polycyclic alkaloid, C22H26N2O3, an indole derivative obtained from Melodinus yunnanensis, comprises three chiral C atoms and crystallizes as a racemate. Its seven-membered heterocyclic ring has a twisted conformation, with the N atom within the plane of the indole moiety and with two adjacent C atoms deviating in opposite directions from its plane by 0.756 (3) (methyl­ene C) and -0.802 (3) Å (methine C). In the crystal, pairs of N-H...O hydrogen bonds connect the mol­ecules into centrosymmetric dimers.

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