FORFARANDE FOR FRAMSTELLNING AV TIANTREN-, TIOXANTEN- OCH FENOXATIINDERIVAT

摘要

Compounds of the formula WHEREIN R1 is COOH, COO-alkyl, CH2OH or CH2-alkanoyl; R2 is CH3 or C2H5; R3 is H, F, Cl or Br; and Y is CH2, O or S, at least one Y being S, and the physiologically acceptable salts thereof, possesses antiphlogistic activity.