A New Sweet Diterpene-Glucoside in Leaves of Rubus suavissimus Structural study on ent-kaurane diterpenoid d imers from Fritillaria hupehensis Toxic effects of ent-kaurane diterpenoids on soil ciliate communities Correction of Some Carbon Signals of Ent-kauran-16β,17-diol and Its Significance Structural Elucidation of a New Diterpenoid, Fritillebinol from Ebeiensis Fritillary Bulb (Fritillaria ebeiensis) Three Ne went-Kaurane Diterpenoids from Isodon xerophilus Structure of a New Chloro-substituded Diterpenoid,Fritillaziebinol from Zihua Ebei Beimu Bulbs (Fritillaria ebeiensis var. purpurea) A new diterpenoid from Isodon nervosus