Biologically active tetranorditerpenoids from the fungus Sclerotinia homoeocarpa causal agent of dollar spot in turfgrass - Herath, H MTB; Herath, W HMW; Carvalho, P; Khan, S I; Tekwani, B L; Duke, S O; Tomaso-Peterson, M; Nanayakkara, N PD (J Nat Prod, 2009)