Two minor phytoecdysteroids of the plant Silene viridiflora

摘要

Chemical investigations of Silene viridiflora (L.) yielded a new ecdysteroid, 20-hydroxyecdysone 20,22-monoacetonide-25-acetate (1), and a known ecdysteroid, 2-deoxypolypodine B-3-β-D-glucoside (2). The elucidation of the chemical structures was established by 1D and 2D NMR experiments.