A novel bacteriohopanoid from Celtis australis L. bark

A novel bacteriohopanoid elucidated as 3β-hydroxy-35-(cyclohexyl-5′-propan-7′-one)-33-ethyl-34-methyl-bactereohopane (1) has been isolated from the bark of Celtis australis (Ulmaceae) together with three known compounds apigenin, quercetin and its glucoside. The structure of 1 was characterized by means of chemical and spectral methods including advanced 2D NMR studies.