1.
Phytochemistry
; 53(4): 465-8, 2000 Feb.
Artigo
em Inglês
| MEDLINE
| ID: mdl-10731024
RESUMO
The hexane extract of the bark of Entandrophragma delevoyi has yielded a novel tetranortriterpenoid, delevoyin C. This compound contains a cyclobutanyl ring incorporating C-19 and a cycloheptanyl ring C including C-30. Gedunin and 11beta-Acetoxygedunin were isolated from the hexane extract of the wood.
Assuntos
Árvores/química , Triterpenos/isolamento & purificação , Hexanos , Espectroscopia de Ressonância Magnética , Extratos Vegetais/química , Triterpenos/química
2.
Phytochemistry
; 53(1): 115-8, 2000 Jan.
Artigo
em Inglês
| MEDLINE
| ID: mdl-10656418
RESUMO
The stem bark of Astrotrichilia voamatata (Meliaceae) has yielded the novel limonoids voamatins C and D. These compounds represent a new type of pentanortriterpenoid and are unique in containing a ring A cyclic ether.
