The corresponding derivatives of Δ1, 3, 5 (10), 9,(11)-8, 14-seco-d-homo-oestratetraen-3-ol- 14, 17a-dione (VII, VIII, IX) have been obtained by the condensation of 3-methoxy-, 3- hydroxy-, and 3-tetrahydropyranyloxy-1-vinyltetralols (IV, V, VI) with methyldihydroresorcinol. The diketones VIII and IX cyclize to form Δ1, 3, 5 (10), 8, 14-d-homo-oestrapentaen-3-ol-17a- one (XIII), and the diketone (VII) may be converted, according to conditions, into 3- ...