Abstract
The title sesquiterpene [systematic name: 6-methoxy-10-methyl-7-(propan-2-yl)-2-oxatricyclo[6.3.1.04,12]dodeca-1(11),4,6,8(12),9-pentaen-5-ol], C16H18O3, was isolated from pathogen-infected stele tissue of Gossypium barbadense. There are two molecules in the asymmetric unit and the dihedral angle between their naphthofuran systems is 86.48 (2)°. In the crystal, O—H⋯O hydrogen bonds between the hydroxy groups and etheric O atoms link the molecules into centrosymmetric tetramers. These tetramers are assembled into (010) layers via stacking interactions between the naphthofuran systems [interplanar distance 3.473 (3) Å] and short C—H⋯O contacts.
Highlights
Crystal dataStipanovicb and Jinggao Liub a Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, M
There are two molecules in the asymmetric unit and the dihedral angle between their naphthofuran systems is
O—H O hydrogen bonds between the hydroxy groups and etheric O atoms link the molecules into centrosymmetric tetramers
Summary
Stipanovicb and Jinggao Liub a Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, M. 83, Tashkent, 100125 Uzbekistan, and bSouthern Plains Agricultural Research. R factor = 0.050; wR factor = 0.158; data-to-parameter ratio = 15.5. The title sesquiterpene [systematic name: 6-methoxy-10methyl-7-(propan-2-yl)-2-oxatricyclo[6.3.1.04,12]dodeca-1(11),4,6,8(12),9-pentaen-5-ol], C16H18O3, was isolated from pathogen-infected stele tissue of Gossypium barbadense. O—H O hydrogen bonds between the hydroxy groups and etheric O atoms link the molecules into centrosymmetric tetramers. These tetramers are assembled into (010) layers via stacking interactions between the naphthofuran systems [interplanar distance 3.473 (3) Å].
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