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Acta Cryst. (2002). E58, o1023-o1024 [ doi:10.1107/S160053680201512X ]
Abstract: (+)-Escholinine perchlorate, C21H26NO4+·ClO4-, is a quaternary benzyltetrahydroisoquinoline alkaloid isolated from Eschscholtzia californica. The partially saturated nitrogen heterocycle has an almost regular half-chair conformation, with the N atom lying 0.666 (3) Å out of the plane of the other atoms. The two methoxy groups lie in the plane of their parent benzene ring. The dihedral angle between the two aromatic rings is 31.44 (7)°.
Online 31 August 2002
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