Neovibsanin F and its congeners, rearranged vibsane-type diterpenes from Viburnum suspensum.

Three new rearranged vibsane-type diterpenes, neovibsanin F (1), 14-epi-neovibsanin F (2), and 14-epi-18-oxoneovibsanin F (3), have been isolated from the leaves of Viburnum suspensum, and their structures were elucidated on the basis of spectroscopic data and comparison with those of previously reported vibsane-type diterpenes.