title: (3S,4R)-3-Ethyl-4-hydr-oxy-3-(3-methoxy-phen-yl)-1-methyl-azepanium (2R,3R)-2,3-bis-(benzo-yloxy)-3-carboxy-propionate.
abstract: The crystal structure of the title compound, C(16)H(26)NO(2) (+)·C(18)H(13)O(8) (-), is stabilized by an extensive network of classical N-H⋯O and O-H⋯O hydrogen bonding. The crystal structure also shows an ammonium-driven diastereo-isomerism.
authors.affiliation: Department of Medicinal Chemistry, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai, 201203, People's Republic of China.
authors.forename: Bo
authors.initials: B
authors.lastname: Chao
authors.forename: Xing-Hai
authors.initials: XH
authors.lastname: Wang
authors.forename: Jian
authors.initials: J
authors.lastname: Sun
authors.forename: Zhui-Bai
authors.initials: ZB
authors.lastname: Qiu