Epimeric Excolides from the Stems of Excoecaria agallocha and Structural Revision of Rhizophorin A.
Org Lett
; 17(11): 2840-3, 2015 Jun 05.
Article
em En
| MEDLINE
| ID: mdl-26011167
ABSTRACT
Excolides A-B (1-4) represent the first examples of a new class of secolabdanoids with an unprecedented framework, which were isolated from the stems of Excoecaria agallocha. Their structures were determined by spectroscopic analysis, chemical modifications, CD, and single-crystal X-ray analysis (1 and 4) as excolide A (1), 11-epi-excolide A (2), 11,13-di-epi-excolide A (3), and excolide B (4). In addition, the structure of rhizophorin A (7), a novel bicyclic secolabdanoid, was revised as excolide A (1).
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1
Base de dados:
MEDLINE
Assunto principal:
Euphorbiaceae
/
Diterpenos
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article