title: (1R,3S,5R,6S)-6-Acet-oxy-8-methyl-3-(p-tolyl-sulfon-yloxy)-8-azoniabicyclo-[3.2.1]octane (2R,3R)-2,3-bis-(benzo-yloxy)-3-carboxy-propanoate.
abstract: The title compound, C(17)H(24)NO(5)S(+)·C(18)H(13)O(8) (-), is the key inter-mediate during the preparation of lesatropane [systematic name (1R,3S,5R,6S)-6-acetoxy-3-(4-methylphenylsulfonyloxy)tropane], a potential anti-glaucoma agent. The tertiary N atom of the tropane ring is involved in inter-molecular N-H⋯O hydrogen bonding, and the carboxylate groups are involved in inter-molecular O-H⋯O hydrogen bonding.
authors.affiliation: Department of Pharmacy, Shanghai Jiao Tong University School of Medicine, South Chongqing Road 280, Shanghai 200025, People's Republic of China.
authors.forename: Li-Min
authors.initials: LM
authors.lastname: Yang
authors.forename: Yi-Fan
authors.initials: YF
authors.lastname: Xie
authors.forename: Ya-Fang
authors.initials: YF
authors.lastname: Gu
authors.forename: Hong-Zhuan
authors.initials: HZ
authors.lastname: Chen
authors.forename: Yang
authors.initials: Y
authors.lastname: Lu