Complex phytoecdysteroid cocktail of Silene otites (Caryophyllaceae).

摘要

Several new minor ecdysteroids [moulting hormones] from Silene otites (Caryophyllaceae) were purified and identified. This plant species had previously been shown to contain a complex ecdysteroid cocktail, with 20-hydroxyecdysone [ecdysterone] as the major component, and significant amounts of 2-deoxyecdysone, 2-deoxy-20-hydroxyecdysone, and 20-hydroxyecdysone 22-acetate, and a set of minor ecdysteroids. The use of powerful techniques for purification and spectroscopic analyses allowed the isolation and identification of more than 30 molecules, including 21-hydroxylated ecdysteroids, thus adding a new position of the carbon skeleton that can be modified in ecdysteroids. Thus, in S. otites, a complex array of individual reactions can be used in various combinations leading both to major and minor components.