Chemical constituents of Rosa laevigata Michx.

: Six compounds were isolated from Rosa laevigata. Five of them were obtained from the ethanolic extract and identified as 2 alpha, 3 beta, 19 alpha, 23-tetrahydroxyurs-12-en-28-oic acid, 2 alpha, 3 alpha, 19 alpha, 23-tetrahydroxyurs-12-en-28-oic acid, euscaphic acid, beta-sitosterol and daucosterol. The other one was obtained from the acetate of emulsive layer of the petroleum ether and elucidared as 2 alpha, 3 beta-dihydrolup-28-methyl ester diacetate.