14 research outputs found
Volatile components and antifeedant activity of the essential oil from Scutellaria hastifolia L.
Essential oils of three species of Scutellaria and their influence on Spodoptera littoralis
Hastifolins A-G, antefeedant neo-clerodane diterpenoids from Scutellaria hastifolia
From the aerial parts of Scutellaria hastifolia, family Lamiaceae (Labiatae), seven neo-clerodane diterpenoids (hastifolins A–G) were isolated. The products are similar to the known scuteparvin and are characterized by being trans-cinnamoyl derivatives. Structures and stereochemistry were determined by intensive NMR investigation. Six of the products form three pairs of epimers at C-13. Hastifolins A–C showed significant antifeedant activit