| abstract |
PROCEDURE FOR OBTAINING BENZOPYRANES, OF FORMULA (I), IN WHICH N VALUE 1 OR 2 AND R1-R5 MAY BE SEVERAL RADICALS, CONSISTING OF THE REACTION OF A COMPOUND OF FORMULA (II) WITH AN ANION OF FORMULA (III) , IN WHICH R1 AND R2 ARE R1 AND R2 OR CONVERTIBLE THEREOF AND R3-R5 AND N HAVE THE SAME MEANINGS AS IN FORMULA (I). THE REACTION IS EFFECTED IN DIMETHYLSULFOXIDE, IN THE PRESENCE OF SODIUM HYDRIDE. THESE COMPOUNDS HAVE PHARMACOLOGICAL APPLICATIONS FOR THE TREATMENT OF HIGH BLOOD PRESSURE. |