Ecdysteroid antagonists (cucurbitacins) from Physocarpus opulifolius (Rosaceae)

cell culture cell lines chemical composition composition chimique cucurbitacins culture de cellule drosophila melanogaster ecdysterone esteroides extractos vegetales fitosteroles graine hormonas de la muda hormone de mue inhibidores desarrollo insectos insect growth regulators moulting hormones physocarpus phytosterols plant extracts seeds semilla steroids