Artículos de revistas
Spruceanumines A and B, novel plumeran indole alkaloids from Aspidosperma spruceanum(Apocynaceae)
Fecha
2009Registro en:
Journal of the Brazilian Chemical Society, v.20, n.4, p.753-759, 2009
0103-5053
10.1590/S0103-50532009000400019
Autor
OLIVEIRA, Vilma B.
VIEIRA, Ivo J. Curcino
BRAZ-FILHO, R.
MATHIAS, Leda
LOPES, Norberto P.
CROTTI, Antonio E. M.
UCHÔA, Daniel E. de A.
Institución
Resumen
Two novel indole alkaloids with plumeran skeleton, spruceanumines A (1) and B (2), and eight known indole alkaloids, aspidospermidine (3), demethoxypalosine (4), aspidocarpine (5), aspidolimine (6), fendlerine (7), aspidolimidine (8), obscurinervidine (9) and obscurinervine (10) were isolated from stem bark and seeds methanolic extracts of Aspidosperma spruceanum. Compounds structures were elucidated on the basis of spectroscopic data, mainly those obtained by ¹H and 13C NMR (1D and 2D) and mass spectrometry. Dois novos alcalóides indólicos com esqueleto plumerano, spruceanuminas A (1) e B (2), e oito alcalóides indólicos conhecidos, aspidospermidina (3), desmetoxipalosina (4), aspidocarpina (5), aspidolimina (6), fendlerina (7), aspidolimidina (8), obscurinervidina (9) e obscurinervina (10), foram isolados do extrato metanólico das cascas do caule e sementes de Aspidosperma spruceanum. As estruturas dos compostos foram elucidadas com base na análise de dados espectroscópicos, principalmente os obtidos por espectros de RMN ¹H e 13C (1D e 2D) e por espectrometria de massas.