. . . "l)carbonyl and 3-chloro-5-(1,1-dioxothiazol-3-yl)carbonyl group. ii) when Y is a sulfur atom, (R1)m represents the group selected from 2-methyl, 3-methyl, 4-methyl, 2-methoxy, 3-methoxy, 4-methoxy, 4-fluoro, 2-chloro, 3-chloro, 4-chloro, 2,5-dichloro, 2,6-dichloro, 3,4-dichloro, 2-bromo, 2-methoxycarbonyl, 4-carboxy, 4-carboxymethyl, 4-ethoxycarbonylmethyl, 4-nitro and 4-(N,N-diethylaminosulfonyl)" .