Artículos de revistas
Clerodane diterpenes from Aristolochia species
Fecha
1987-12-01Registro en:
Phytochemistry, v. 26, n. 10, p. 2781-2784, 1987.
0031-9422
10.1016/S0031-9422(00)83590-6
WOS:A1987K556600025
2-s2.0-0001036346
4484083685251673
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The investigation of Aristolochia brasiliensis and A. esperanzae afforded 12 clerodane derivatives, including the following six novel ones: rel (5S, 8R, 9S, 10R)-2-oxo-ent-3-cleroden-15-oic acid, rel (5S, 8R, 9S, 10R)-2-oxo-ent-clerod-3,13-dien-15-oic acid methyl ester, (5R, 8R, 9S, 10R)-ent-3-cleroden-15-oic acid, rel (5S, 8R, 9S, 10R)-ent-clerod-3,13-dien-15-oic acid, (2S, 5R, 8R, 9S, 10R)-2-hydroperoxy-ent-3-cleroden-15-oic acid methyl ester and (2S, 5R, 8R, 9S, 10R)-2-hydroperoxy-ent-clerod-3,13-dien-15-oic acid methyl ester. The structures were assigned on the basis of spectral data and derivatization by chemical reactions. The occurrence of this type of diterpene has not previously been reported in Aristolochiaceae. © 1987.