Refers to a Peptide Analogue of oxintomodulina comprising the amino acid sequence of his - (D -) - Gln Gly THR Phe - Thr ser ASP - (1 - (-) - Lys ASP Glu Leu Tyr Lys ala GLN Glu PHE Val GLN TRP - Leu - Leu ASN (AIB) - ala ARG ASN ARG ASN ASN Ile Ala xaa38 - xaa39 SEC ID no.: 5 where xaa38 and xaa3 9 are each Peg CYS or CYS is absent and the c-terminal amino acid amidado is optionally.It also relates to a Pharmaceutical composition containing Said Peptide analogs useful in the treatment of diabetes, ObesitySE REFIERE A UN ANALOGO PEPTIDICO DE OXINTOMODULINA QUE COMPRENDE LA SECUENCIA DE AMINOACIDOS His-(D-Ser)-Gln-Gly-Thr-Phe-Thr-Ser-Asp-(1-Nal)-Ser-Lys-Tyr-Leu-Asp-Glu-Lys-Ala-Ala-Gln-Glu-Phe-Val-Gln-Trp-Leu-Leu-Asn-(Aib)-Ala-Arg-Asn-Arg-Asn-Asn-Ile-Ala-Xaa38-Xaa39 DE SEC ID Nº: 5 DONDE Xaa38 Y Xaa39 SON CADA UNO Cys, Cys-PEG O ESTA AUSENTE Y EL AMINOACIDO C-TERMINAL ES OPCIONALMENTE AMIDADO. TAMBIEN SE REFIERE A UNA COMPOSICION FARMACEUTICA QUE CONTIENE DICHO ANALOGO PEPTIDICO UTIL EN EL TRATAMIENTO DE DIABETES, OBESIDAD