Two new grayanane diterpenoids from the flowers of Rhododendron molle

A phytochemical investigation of the flowers of Rhododendron molle has yielded two new grayanane diterpenoids, rhodomolleins F and G (1, 2). Compounds 1 and 2 possessed an oxo-bridge between C-5 and C-9, and their structures were elucidated on the basis of interpretation of spectroscopic data, including 1D and 2D NMR techniques.Plant SciencesChemistry, AppliedChemistry, MedicinalPharmacology & PharmacySCI(E)0ARTICLE8764-7681