Acta Crystallographica Section E (Aug 2009)

Stemofoline ethyl acetate solvate

  • Pitchaya Mungkornasawakul,
  • Stephen G. Pyne,
  • Alison T. Ung,
  • Araya Jatisatienr,
  • Anthony C. Willis

DOI
https://doi.org/10.1107/S1600536809026889
Journal volume & issue
Vol. 65, no. 8
pp. o1878 – o1879

Abstract

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Crystals of the title compound, C22H29NO5·C4H8O2, {[systematic name: (2R,3R,5R,5aS,6R,8aR,9S)-(5Z)-5-[3-butyltetrahydro-6-methyl-2,5-methano-4,3,8a-[1]propanyl[3]ylidenefuro[3,2-f][1,4]oxazepin-7(5H)-ylidene]-4-methoxy-3-methylfuran-2(5H)-one ethyl acetate solvate} were isolated from the root extracts of Stemona aphylla (Stemonaceae). The structure closely resembles those of stemofoline derivatives which have previously been reported. Intermolecular contacts are observed between some C-bonded H atoms and nearby O atoms, perhaps indicating weak interactions which could influence the packing of species within the unit cell.