IUCrData (May 2021)

8-Hydroxy-6-methoxy-7-(3-methylbut-2-enyloxy)coumarin (capensine)

  • Azimjon Mamadrakhimov,
  • Luqmonjon Mutalliyev,
  • Sirojiddin Abdullaev,
  • Khamid Khodjaniyazov,
  • Lidiya Izotova,
  • Haji Akber Aisa

DOI
https://doi.org/10.1107/S241431462100451X
Journal volume & issue
Vol. 6, no. 5
p. x210451

Abstract

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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 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.

Keywords