3-methylenespiro (benzofuranpiperidines)

A compound of the formula ##STR43## wherein R is hydrogen, loweralkyl of 1 to 6 carbon atoms, aralkyl, loweralkoxyloweralkyl having 1 to 6 carbon atoms in the alkoxy and alkyl groups, benzyloxyloweralkyl having 1 to 6 carbon atoms in the alkyl group, a group of the formula ##STR44## wherein R.sup.1 is aryl or loweralkyl of 1 to 6 carbon atoms, a group of the formula ##STR45## wherein R.sup.2 is hydrogen or loweralkyl of 1 to 6 carbon atoms, a group of the formula ##STR46## wherein R.sup.3 is hydrogen or loweralkyl of 1 to 6 carbon atoms, V is hydrogen or halogen and n is 2, 3 or 4, a group of the formula ##STR47## wherein n is 2 or 3, a group of the formula ##STR48## wherein n is 2 or 3, a group of the formula ##STR49## wherein Z is hydrogen, halogen, loweralkyl of 1 to 6 carbon atoms, loweralkoxy of 1 to 6 carbon atoms, trifluoromethyl or hydroxy and n is 1, 2, 3, or 4 or a group of the formula ##STR50## wherein n is 2, 3 or 4;

• X is hydrogen, halogen, loweralkyl of 1 to 6 carbon atoms, loweralkoxy of 1 to 6 carbon atoms, hydroxy or trifluoromethyl, an optical antipode thereof or a pharmaceutically acceptable acid addition salt thereof.