Date Published: April 01, 2011
Publisher: International Union of Crystallography
Author(s): S. Yousuf, R. S. T. Kamdem, P. Wafo, B. T. Ngadjui, Hoong-Kun Fun.
The title compound, 0.897C30H48O3.0.103C30H47O2F is a co-crystal of two triterpenes isolated from the resin of Canarium schweinfurthiiand Engl. Both triterpenes consists of four trans-fused rings having chair/half-chair/half-chair and envelope conformations. The molecular conformations are stabilized by intramolecular C—H⋯O hydrogen bonds, forming rings of S(7) graph-set motif. In the crystal, molecules are linked by intermolecular O—H⋯O and C—H⋯O interactions, forming sheets parallel to (001). All atoms. excepting the axially-oriented hydroxyl group in the major component and the equatorially-oriented fluorine atom in the minor component, are overlapping.
For the crystal structure of 3α-hydroxytirucalla-7,24-diene-21-oic acid, see: Mora et al. (2001 ▶). For the crystal structure of 3α-hydroxytirucalla-8,24-diene-21-oic acid, see: Yousuf et al. (2011 ▶). For the biological activity of canarium schweinfurthiiand, see: Atawodi (2010) ▶; Dongmo et al. (2010 ▶). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986 ▶).