Bioactive deoxypreussomerins and dimeric naphthoquinones from Diospyros ehretioides fruits: deoxypreussomerins may not be plant metabolites but may be from fungal epiphytes or endophytes - Prajoubklang, A; Sirithunyalug, B; Charoenchai, P; Suvannakad, R; Sriubolmas, N; Piyamongkol, S; Kongsaeree, P; Kittakoop, P (Chem Biodivers, 2005)