Seven new ent-kauranoid derivatives ent-7a,18-dihydroxykaur-16-en-3-one, ent-18-acetoxy-3b,7a-dihydroxykaur-15-en-17-al, ent-3b-acetoxy-7a,18-dihydroxykaur-15-en-17-al, ent-18-acetoxy-3b,7a,17-trihydroxykaur-15-ene, ent-3b-acetoxy-7a,17,18-trihydroxykaur-15-ene, ent-18-acetoxy-3b,7a,17-trihydroxy-15b,16b-epoxykaurane and ent-3b-acetoxy-7a,17,18-trihydroxy-15b,16bepoxykaurane have been isolated from Sideritis moorei. The structures of these compounds have been established by spectroscopic means and chemical correlations.