Acta Crystallographica Section E (Sep 2013)

Tetrahydroalstonine

  • Xavier Cachet,
  • François-Hugues Porée,
  • Sylvie Michel,
  • Pascale Lemoine

DOI
https://doi.org/10.1107/S1600536813021168
Journal volume & issue
Vol. 69, no. 9
pp. o1389 – o1390

Abstract

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In the title compound, C21H24N2O3 [systematic name: methyl (20α)-16,17-didehydro-19α-methyl-18-oxayohimban-16-carboxylate], the molecule adopts an L-type conformation. The crystal packing is governed by one N—H...π and one C—H...π interactions. The crystal cohesion is ensured by intermolecular van der Waals contacts [shortest O...O contact = 3.199 (2) Å].