Thiazine or thiomorpholine derivatives

Details Thiazine or thiomorpholine derivatives Thiazine or thiomorpholine derivatives

C - Chemistry, Metallurgy

07

D

C07D 279/12 (2006.01) A61K 31/54 (2006.01) A61K 31/675 (2006.01) A61K 31/695 (2006.01) C07D 417/00 (2006.01) C07F 7/10 (2006.01) C07F 9/6544 (2006.01)

Patent

CA 2141780

This invention relates to the compounds of the formula [I] which are useful for the treatment of cataracts, and the synthetic intermediates of the formula [II], Image Image [I] [II] wherein R1 is hydroxy which can be protected by a hydroxy protective group; R2 is lower alkyl; R3 is hydrogen, lower alkyl, hydroxy, which can be protected by a hydroxy protective group, or lower alkoxy, and the said lower alkyl can be substituted by hydroxy, which can be protected by a hydroxy protective group, amino or lower alkylamino; R4 is carboxy which can be converted into ester or amide; tetrazolyl; phosphono which can be converted into ester or amide; or sulfonyl which can be converted into ester or amide; A is alkylene; B is C=O, C=S or CH2, and Image is single bond or double bond.

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