title: 13c-(2-Chloro-ethoxy)-1,13c-dihydro-2,3-epoxy-dibenzo[a,kl]xanthan-1-one.
abstract: The title compound, C(22)H(15)ClO(4), containing three chiral C atoms, is an inter-mediate in the design of chiral alcohols. In the crystal structure, a chain structure is generated through C-H⋯O contacts and an intramolecular C-H⋯O interaction also occurs. The dihedral angle between the benzene ring and the naphthalene system is 16.5°.
authors.affiliation: School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, Guangdong, People's Republic of China.
authors.forename: Jin-Xiang
authors.initials: JX
authors.lastname: Chen
authors.forename: Yu-Qin
authors.initials: YQ
authors.lastname: Wang
authors.forename: Shu-Guang
authors.initials: SG
authors.lastname: Wu
authors.forename: Zhi-Hong
authors.initials: ZH
authors.lastname: Jiang
authors.forename: Zhi-Peng
authors.initials: ZP
authors.lastname: Chen