Patent AT-E40113-T1: [Translated] PYROGLUTAMIC ACID DERIVATIVES, PROCESSES FOR THEIR MANUFACTURE,INTERMEDIATE PRODUCTS AND FUNCIDAL AND/OR BACTERICIDE AGENTS, AND COSMETIC OR PHARMACEUTICAL AGENTS.

1. Claims for the Contracting States : BE CH DE GB IT LI LU NL SE Pyroglutamic derivative, characterized in that it corresponds to the following formula (I) : see diagramm : EP0135444,P15,F2 in which : Y and Z have the following meanings : Y : -CO CH2 Cl see diagramm : EP0135444,P15,F3 see diagramm : EP0135444,P15,F4 Z : -COO CH3 ; Y : -CO CH2 Cl Z : -COO CH3 ; see diagramm : EP0135444,P15,F5 Z : -COO CH3 ; see diagramm : EP0135444,P15,F6 Z : -COO CH3 ; see diagramm : EP0135444,P15,F7 Z : -COO CH3 ; see diagramm : EP0135444,P16,F1 Z : -COOH ; Y : -COCH2 -Cl Z : -COOH 1. Claims for the Contracting State : AT Process for preparing a pyroglutamic derivative of the following formula (I) : see diagramm : EP0135444,P17,F2 in which : Y and Z have the following meanings : Y : -CO CH2 Cl see diagramm : EP0135444,P17,F3 see diagramm : EP0135444,P17,F4 Z : -COO CH3 ; Y : -CO CH2 Cl Z : -COO CH3 ; see diagramm : EP0135444,P17,F5 Z : -COO CH3 ; see diagramm : EP0135444,P17,F6 Z : -COO CH3 ; see diagramm : EP0135444,P17,F7 Z : -COO CH3 ; see diagramm : EP0135444,P17,F8 Z : -COOH ; Y : -COCH2 -Cl Z : -COOH characterized in that a compound of the following formula (II) : see diagramm : EP0135444,P17,F9 in which W is chosen from an ester group corresponding to Z defined above, or -COOSiMe3 group ; is reacted with an acylating agent such as an organic halide of formula Y-Hal, where Hal = halogen, especially chlorine, and where Y is defined as above, or with diketene ; and, in the case where W is a -COOSiMe3 group, the resulting intermediate product is converted to the corresponding acid or ester, for example by a hydrolysis or alcoholysis of this product.

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