Phenylalkan (en)oic acids

Abstract From the Canadian patent

The phenylalkan(en)oic acids of the formula: wherein A is, i) ~NHCO~, ii) ~O~, iii) ~NHSO2~ iv) ~CO~, v) ~CH2~ or, vi) ~CH(OH)~;, W is ~i) C1-13 alkylene ii) phenylene or, iii) , ;, R is ~i) hydrogen ii) C1-4 alkyl, iii)~COOH, iv) saturated or unsaturated 4-7 membered mono-cyclic, hetero ring containing one nitrogen as a hetero atom or saturated or unsaturated, 4-7 membered mono-cyclic hetero ring containing one nitrogen as a hetero atom substituted by an oxo group, A, taken together with W and R1 is, two R2 are, same or different, i) hydrogen -2-, ii) C1-4 alkyl or, iii) 4-7 membered saturated or unsaturated, mono-cyclic hetero ring containing two or three of nitrogen and sulfur in total …