PROCEDIMIENTO PARA LA OBTENCION DEL 4-HIDROXI-2-METIL-N-(5-METIL-3-ISOXAZOLIL)-2H-1,2-BENZOTIAZINA-3-CARBOXAMIDA-1,1-DIOXIDO

摘要

Cpds of gen formula (I): where R1=H or methyl; R2 and R3=H or 1-7C alkyl and the corresp. alkali(ne earth) metal- and amine salts are prepd by reacting a cpd (II): where R4=Alkyl with a cpd (III): presence of a molecular sieve. (I) are used to treat pain caused by arthritis, bursitis etc i doses of 0.5-2 g/day.