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8-Hy-droxy-6-meth-oxy-7-(3-methyl-but-2-en-yloxy)coumarin (capensine)
Azimjon Mamadrakhimov1, Luqmonjon Mutalliyev1,2, Sirojiddin Abdullaev1,2
1Institute of Bioorganic Chemistry, UzAS, M. Ulugbek Str. 83, 100125, Tashkent, Uzbekistan.
Abstract:
The title coumarin derivative, C15H16O5, was isolated from the roots of Sophora japonica. The coumarin (2H-chromen-2-one) fragment is almost planar, with an r.m.s. deviation of 0.0356 Å. The carbon atom of the meth-oxy substituent is coplanar with the benzo-pyran oxa-heterocycle. The 3-methyl-but-2-en-yloxy group is disordered over two sets of sites with occupation factors of 0.920 (3) and 0.080 (3). In the crystal, mol-ecules are linked by O-H⋯O and C-H⋯O hydrogen bonds into chains propagating along the [101] direction.
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