86.
    发明专利
    未知

    公开(公告)号:DE69004900T2

    公开(公告)日:1994-06-16

    申请号:DE69004900

    申请日:1990-08-27

    Applicant: SCLAVO SPA

    Abstract: This invention firstly provides a method for purifying particular compounds of peptide or pseudo-peptide structure in which the number of protonable basic functions is greater than the number of acid functions and which have a molecular weight of less than 1000 daltons, by ion exchange displacement chromatography. In the method of the present invention the stationary phase used is a cationic exchange resin or a cross-linked polymer matrix activated with acid groups; the transporter solvent used is water if the compound to be purified already possesses at least one net positive charge, or aqueous dilute solutions of inorganic or strong organic acids which protonate the basic groups of the peptide or pseudo-peptide to be separated without modifying the structure of the peptide compound, such as acetic acid, trifluoroacetic acid, formic acid, hydrochloric acid or sulphuric acid; the displacer compound used is a triethylenetetraammonium salt.

    88.
    发明专利
    未知

    公开(公告)号:DE3884672T2

    公开(公告)日:1994-04-28

    申请号:DE3884672

    申请日:1988-02-16

    Applicant: SCLAVO SPA

    Abstract: The specification relates to a synthetic peptide converted into a salt comprising one or more amine groups and capable of potentiating in vivo the primary and secondary antibody response to thymo-dependent and thymo-independent antigens having low immunogenicity. Injectable preparations comprising a solution of the peptide in a pharmacologically acceptable solvent are particularly useful as adjuvants in therapy.

    89.
    发明专利
    未知

    公开(公告)号:DE3886118D1

    公开(公告)日:1994-01-20

    申请号:DE3886118

    申请日:1988-07-13

    Applicant: SCLAVO SPA

    Abstract: A method is described for the purification of crude human interferon from solutions containing it, which comprises: a) the complete adsorption of the crude interferon in a column of siliceous material which has previously been disinfected with an aqueous solution of formaldehyde; b) the washing of the column with non-pyrogenic, sterile, deionised water; c) the removal of the extraneous residual proteins by the elution of the column successively with a 1.4 M aqueous solution of NaCl, with non-pyrogenic, sterile, deionised water, and with an aqueous solution of a solvent having hydrophobic and acidic properties at a molar concentration of 0.001 M to 0.003 M; d) the elution of the interferon from the column with an aqueous solution of the same solvent as that used in step c) at a molar concentration of from 0.01 to 0.03 M and finally, e) the recovery and lyophilisation of the eluted fraction and/or fractions containing the purified interferon. The method enables interferon to be obtained, the purity of which, measured as its specific activity, is at least 1000 times greater than that of the crude interferon, with a yield greater than 85%. The interferon thus purified is particularly useful for treatment in man.

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