Patent ID: 7491747

Claim:
Compound of the formula I: in which: A represents carboxyl; (C 6 -C 18 )aryloxycarbonyl in which the aryl group is optionally substituted; (C 1 -C 14 )alkoxycarbonyl in which the alkyl group is optionally substituted; —CO—NHOH; -tetrazolyl; B represents an optionally substituted ethylene group —CH 2 —CH 2 —; R 1 represents a hydrogen atom; optionally substituted (C 1 -C 14 )alkyl; optionally substituted (C 6 -C 18 )aryl; optionally substituted heteroaryl; (C 6 -C 18 )aryl(C 1 -C 14 )alkyl in which each of the aryl and/or alkyl radicals are optionally substituted; and heteroaryl(C 1 -C 14 )alkyl in which each of the heteroaryl and/or alkyl radicals are optionally substituted; Z represents S or Se; n is an integer equal to 0, 1 or 2; R 2 represents optionally substituted (C 6 -C 18 )aryl; optionally substituted heteroaryl; or optionally substituted heterocycle containing an aromatic moiety; and when R 1 represents optionally substituted (C 6 -C 18 )aryl, then R 2 can also represent (C 1 -C 14 )alkyl; it being understood that when R 1 represents naphthyl or 4-methoxyphenyl, A represents carboxyl or methoxycarbonyl, B represents ethylene, n represents 0, and P represents S or Se, then R 2 does not represent phenyl, the stereoisomers thereof and the addition salts thereof with acids or bases.