Triterpenoid,coumarin and quinone constituents of eleven Diospyros species (Ebenaceae)

From the bark and/or timber extracts of Diospyros hirsuta, D. moonii, D. quaesita, D. spinescens, D. thwaitesii and D. walkeri, the following compounds have been isolated; lupeol, betulin, betulinic acid sitosterol, taraxerol, taraxerone, ursolic acid, oleanolic acid scopoletin, plumbagin, elliptinone, diospyrin and diosindigo A. TLC examination of the bark and timber extract of D. acuta, D. chaetocarpa, D. oblongifolia, D. oppositifolia and D. rheophytica is reported. Lupeol betulin, oleanolic acid and sitosterol have been isolated from the fruit of D. oblongfolia.