8-Hydroxy-6-methoxy-7-(3-methylbut-2-enyloxy)coumarin (capensine)
A. MamadrakhimovInstitute of Bioorganic Chemistry, UzAS, M. Ulugbek Str. 83, 100125, Tashkent, UzbekistanLuqmonjon MutalliyevNational University of Uzbekistan, University Str. 4, Tashkent 100174, UzbekistanSirojiddin AbdullaevNational University of Uzbekistan, University Str. 4, Tashkent 100174, UzbekistanKhamid U. KhodjaniyazovNational University of Uzbekistan, University Str. 4, Tashkent 100174, UzbekistanL. Yu. IzotovaInstitute of Bioorganic Chemistry, UzAS, M. Ulugbek Str. 83, 100125, Tashkent, UzbekistanHaji Akber AisaKey Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Science, Urumqi 830011, People's Republic of China
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ABI
Annotatsiya
The title coumarin derivative, C 15 H 16 O 5 , was isolated from the roots of Sophora japonica . The coumarin (2 H -chromen-2-one) fragment is almost planar, with an r.m.s. deviation of 0.0356 Å. The carbon atom of the methoxy substituent is coplanar with the benzopyran oxa-heterocycle. The 3-methylbut-2-enyloxy group is disordered over two sets of sites with occupation factors of 0.920 (3) and 0.080 (3). In the crystal, molecules are linked by O—H...O and C—H...O hydrogen bonds into chains propagating along the [101] direction.
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