1,2,5-Oxadiazolo[3,4-b]glycyrrhetinic acid.
Acta Crystallogr Sect E Struct Rep Online
; 65(Pt 7): o1547, 2009 Jun 10.
Article
en En
| MEDLINE
| ID: mdl-21582833
THE TITLE COMPOUND [SYSTEMATIC NAME: 11-oxo-2,3-(oxy-dinitrilo)olean-12-en-29-oic acid], C(30)H(42)N(2)O(4), contains a linear array of five six-membered rings and a five-membered heterocyclic ring. The C ring, containing an α,ß-unsaturated ketone, has a slightly distorted half-chair conformation, as does the A ring, with N-C-C angles 125.3â
(5), 111.2â
(4), 124.9â
(5) and 109.2â
(5)°, while the other three six-membered rings adopt chair conformations. The enanti-omer has been assigned by reference to unchanging chiral centres in the synthetic procedure. An intramolecular C-Hâ¯O interaction is present. In the crystal structure, inter-molecular O-Hâ¯O hydrogen bonds link the mol-ecules.
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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Acta Crystallogr Sect E Struct Rep Online
Año:
2009
Tipo del documento:
Article
Pais de publicación:
Estados Unidos