2-carboethoxy-4-methoxy-1,6,7,8-tetrahydrocyclopent[g]indole
1-benzyl-2-methyl-4-methoxy-1,6,7,8-tetrahydrocyclopent[g]indole
1-benzyl-2-methyl-1,6,7,8-tetrahydro-1-aza-as-indacen-4-ol
2-acetyl-1-benzyl-4-methoxy-1,6,7,8-tetrahydrocyclopent[g]indole
1-benzyl-2-[2-(1-hydroxyethyl)]-4-methoxy-1,6,7,8-tetrahydrocyclopent[g]indole