THE OBJECT OF THE PRESENT INVENTION IS BENZOTHIAZINE DERIVATIVES HAVING THE CAPABILITY OF INHIBITING 11β-HSD1 NOT ONLY AT AN ENZYMATIC LEVEL BUT ALSO AT A CELL LEVEL.THE COMPOUNDS OF THE PRESENT INVENTION ARE OF GENERAL FORMULA (I): WHEREIN NOTABLY R1 REPRESENTS A HYDROGEN OR OR1 REPRESENTS AN ESTER OR AN ETHER. R2 REPRESENTS A NAPHTHYL OR A 1,2,3,4-TETRAHYDRO- NAPHTHALENE OR A BIPHENYL OR PHENYL PYRIDINE OR A SUBSTITUTED PHENYL R3 REPRESENTS A METHYL OR ETHYL R4 AND R’4 REPRESENT A HYDROGEN.