N,n-disubstituted aminoethylcarbamyl protecting groups for cysteine
    1.
    发明授权
    N,n-disubstituted aminoethylcarbamyl protecting groups for cysteine 失效
    N,N-取代氨基甲酰胺保护基团

    公开(公告)号:US3679655A

    公开(公告)日:1972-07-25

    申请号:US3679655D

    申请日:1969-06-20

    Applicant: HOECHST AG

    CPC classification number: C07K5/101 C07K1/067 Y02P20/55 Y10S930/26

    Abstract: A METHOD OF PROTECTING THE SULFUR ATOM OF CYSTEINE N PEPTIDE SYNTHESIS BY REACTION WITH B-(N,N-DISUBSTITUTED)AMINOETHYL ISOCYANATE IN WHICH ONE SUBSTITUENT IS METHYL OR EHTYL AND THE OTHER IS BENZYLOXYCARBONYL, T-BUTYLOXYCARBONYL, OR ADAMANTYLOXYCARBONYL. FOR REMOVAL OF THE PROTECTIVE GROUP, THE PEPTIDE IS TREATED WITH A STRONG ACID TO FORM THE ACID SALT OF THE CORRESPONDING MONOSUBSTITUTED N-ETHYL OR N-METHYL AMINO COMPOUND AND THEN MADE ALKALINE TO LIBERATE THE AMINE. THE PROTECTIVE GROUP CLEAVES INTRAMOLECULARLY WITH FORMATION OF A METHYL OR ETHYL-SUBSTITUTED IMIDAZOLONE AND THE PEPTIDE IN WHICH THE CYSTEINE SULFUR ATOM IS PRESENT AS SULFHYDRYL.

    Process for the manufacture of insulin, analogs and derivatives thereof
    3.
    发明授权
    Process for the manufacture of insulin, analogs and derivatives thereof 失效
    制备胰岛素,类似物及其衍生物的方法

    公开(公告)号:US3883500A

    公开(公告)日:1975-05-13

    申请号:US41031073

    申请日:1973-10-29

    Applicant: HOECHST AG

    CPC classification number: C07K14/62 Y02P20/55 Y10S930/26

    Abstract: D R A W I N G
    A method for making insulin and certain derivatives thereof from a compound of the formula (I)

    D R A W I N G
    wherein X is hydrogen or an S-protective group and n is an integer from two to four, which comprises cleaving any Sprotective groups present and dehydrogenating -SH groups to form S-S bonds to form a compound of the formula (II)

    BRIDGE BY TREATING THE LATTER COMPOUND WITH AN ACID. Compounds of the formula II.

    and then eliminating the

    Abstract translation: 一种由式(I)化合物制备胰岛素及其某些衍生物的方法,其中X为氢或S-保护基,n为2至4的整数,其包括切断存在的任何S-保护基团并脱氢 - SH基团形成SS键以形成式(II)的化合物,然后通过用酸处理化合物来消除桥。 式II的化合物。

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