title: Fraxinellone.
abstract: In the title compound, C(14)H(16)O(3) [systematic name: (3R*,3aR*)-3-(3-furan-yl)-3a,7-dimethyl-3a,4,5,6-tetra-hydro-2-benzofuran-1(3H)-one], the pendant methyl and furan groups attached to the stereogenic centres lie to the same side of the fused ring system. The dihedral angle between the five-membered rings is 74.8 (2)°; the fused five-membered ring adopts a twisted conformation. In the crystal, mol-ecules are linked by weak C-H⋯O inter-actions, which generate [100] chains.
authors.affiliation: Jiangsu Chiatai Tianqing Pharmaceutical Co. Ltd, Nanjing 210042, People's Repulic of China, and, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Hong-Mei
authors.initials: HM
authors.lastname: Gu
authors.forename: Hao
authors.initials: H
authors.lastname: Xu
authors.forename: Zhao-Zhao
authors.initials: ZZ
authors.lastname: Zhong
authors.forename: Hai-Liang
authors.initials: HL
authors.lastname: Zhu
authors.forename: Qing-Shan
authors.initials: QS
authors.lastname: Li