Studies on the diterpenoid constituents of Rabdosia ternifolia: Structural elucidation of new diterpenoids, rabdoternins A, B and C.

Abstract
Three new diterpenoids, rabdoternins A (1), B (2) and C (3) have been isolated from the dried leaves of Rabdosia ternifolia (D. DON) HARA. Their structures have been elucidated on the basis of spectroscopic and chemical evidence.