(+)-14bα-3-Oxoglycyrrhetinic acid: Catemeric hydrogen bonding in a non-racemic triterpenoid diketo acid

Hugh W. Thompson, Roger A. Lalancette, Elizabeth M. Kikolski

Research output: Contribution to journalArticlepeer-review

Abstract

The title compound, (+)-10,13-dioxo-2α,4aβ,6aα,6bα, 9,9,12aβ-heptamethyl-1,2,3,4,4a,5,6,6a,6b,7,8,8aα,9,10,11,12,12a, 12bα,13,14bα-eicosahydropicene-2β-carboxylic acid, C 30H44O4, aggregates as carboxyl-to-ketone hydrogen-bonding catemers. Hydrogen bonds progress from the carboxyl group of one molecule to the remote-ring ketone group of a translationally related neighbor in an adjoining cell connected by a common a cell-edge [O⋯O = 2.766 (3) Å and O-H⋯O = 163Æ], yielding chains that extend in the [011] direction. In the crystal structure, there are also four C-H⋯O close contacts. λ 2006 International Union of Crystallography All rights reserved.

Original languageEnglish (US)
Pages (from-to)o5482-o5484
JournalActa Crystallographica Section E: Structure Reports Online
Volume62
Issue number12
DOIs
StatePublished - Dec 1 2006

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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