IMBIV 05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Withanolides with Phytotoxic Activity from Jaborosa caulescens var. caulescens and J. caulescens var. bipinnatifida.
Autor/es:
NICOTRA VIVIANA; GIL ROBERTO; OBERTI JUAN C.; BURTON GERARDO
Revista:
JOURNAL OF NATURAL PRODUCTS
Editorial:
American Chemical Society and the American Society of Pharmacognosy-Washington.DC.
Referencias:
Año: 2007 vol. 70 p. 808 - 812
ISSN:
0163-3864
Resumen:
Seven new withanolides(1-7) were isolated from the aereal parts of Jaborosa caulescens var. caulescens and Jaborosa caulescens var bipinnatifida. Three of the new copounds are realted to jaborosalactones R; S; and T with a gama lactone side chain and hemiketal (or ketal) ring formed between a 21 hydroxyl and a 12-ketone (1-3). Compounds 1, 2, and 7 showed selective phytotoxicity toward monocotyledonous and dicotyledonous species.
