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SYNTHESIS OF AN INTERMEDIATE FOR THE PREPARATION OF 5,6-DIHYDRO-(S)-4-(ETHYLAMINO)-(S)-6-METHYL-4H-THIENO(2,3-b)THIOPYRAN-2-SULFONAMIDE 7,7-DIOXIDE INTERMEDIATES AND RELATED COMPOUNDS
SYNTHESIS OF AN INTERMEDIATE FOR THE PREPARATION OF 5,6-DIHYDRO-(S)-4-(ETHYLAMINO)-(S)-6-METHYL-4H-THIENO(2,3-b)THIOPYRAN-2-SULFONAMIDE 7,7-DIOXIDE INTERMEDIATES AND RELATED COMPOUNDS