Derivatives of 3 - (2-carboxyethyl) - 2 - amino - 2 - oxo - 1.3 - Grabarsky, IT's The Wrong Guy spiro [4.5] Dean, their Preparation and their use in Medicine, particularly in the treatment of pain.<;p>;DERIVADOS DE 3-(CARBOXIETIL)-8-AMINO-2-OXO-1,3-DIAZA-ESPIRO-[4.5]-DECANO, SU PREPARACIÓ;N Y SU USO EN MEDICAMENTOS, EN PARTICULAR EN EL TRATAMIENTO DEL DOLOR.<;/p>;