11α-Ethoxy-ß-boswellic acid and nizwanone, a new boswellic acid derivative and a new triterpene, respectively, from Boswellia sacra.
Chem Biodivers
; 10(8): 1501-6, 2013 Aug.
Article
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| MEDLINE
| ID: mdl-23939798
ABSTRACT
A new boswellic acid derivative, 11α-ethoxy-ß-boswellic acid (EBA; 1) and a new ursane-type triterpene, named nizwanone (2), were isolated from Omani frankincense Boswellia sacra Flueck. together with two known compounds papyriogenin B and rigidenol. The structures of 1 and 2 were elucidated by detailed spectroscopic analysis using (1) H- and (13) C-NMR, (1) H,(1) H-COSY, HMQC, HMBC, and HR-EI-MS techniques. The relative configurations of 1 and 2 were assigned by comparative analysis of the NMR spectral data with those of known analogs together with NOESY experiments. Structures of known compounds were identified by comparison with the reported data.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Resinas de Plantas
/
Triterpenos
/
Boswellia
Idioma:
En
Revista:
Chem Biodivers
Asunto de la revista:
BIOQUIMICA
/
QUIMICA
Año:
2013
Tipo del documento:
Article