title: 7-(Hydroxy-meth-yl)-2-(1-hydr-oxy-1-methyl-ethyl)-4-meth-oxy-2,3-dihydro-5H-furo[3,2-g]chromen-5-one methanol hemisolvate.
abstract: The title compound (cimifugin), C(16)H(18)O(6)·0.5CH(3)OH, was isolated from the rhizome of Actaea asiatica Hara. The asymmetric unit contains two independent mol-ecules and a solvent methanol mol-ecule. The five-numbered ring adopts an envelope conformation in each molecule. Intra- and inter-molecular O-H⋯O hydrogen bonds stabilize the crystal structure.
authors.affiliation: Chemical Engineering and Pharmaceutics College, Henan University of Science and Technology, Luoyang 471003, People's Republic of China.
authors.forename: Ru
authors.initials: R
authors.lastname: Li
authors.forename: Pu
authors.initials: P
authors.lastname: Liu
authors.forename: Yu-Mei
authors.initials: YM
authors.lastname: Gao
authors.forename: Lin-Lin
authors.initials: LL
authors.lastname: Qin
authors.forename: Hua-Ning
authors.initials: HN
authors.lastname: Yu