- Novel process
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The invention relates to a process for preparing benzothiazolone compounds having pharmacological activity and to intermediates used in their preparation.
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- 7-(2-AMINOETHYL) BENZOTHIAZOLONES
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There are disclosed compounds of formula I, Ar--CH. sub.2 CH 2--NH--CR 1 R 2--X--Y I in whichAr represents a group, STR1 X represents a C. sub.1-12 alkylene chain optionally interrupted or terminated by one or more groups selected from--S(O) n--,--O--,--C(Z)--, CR 6 R. sup.7, phenylmethyne,--NR 8--,--CONH--,--NHCO--and--NHCONH--, Y represents an optionally substituted aryl or cycloalkyl group,Z represents O or S, R 1, R 2, R 5 and R 9 each independently represent hydrogen or alkyl C 1-6,R 3 and R 4 represent hydrogen, or R. sup.3 and R 4 together form a group--S--,--NR 9--or--CH 2--,R 6 and R 7 independently represent hydrogen, alkyl C 1-6, fluoro, cyano, or CF. sub.3, provided that at least one of R 6 and R 7 is other than hydrogen,R 8 represents hydrogen or alkyl C 1-6, or when X is interrupted or terminated by more than one--NR 8--group may together with another R 8 group form the chain--CH 2--CH 2--, andn represents 0, 1 or 2,and pharmaceutically acceptable derivatives thereof.Processes for their production and pharmaceutical compositions and methods of treatment involving their use are also described.
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