TRITYLATION REACTIONS BASED ON METALLIC CATALYSIS
    8.
    发明申请
    TRITYLATION REACTIONS BASED ON METALLIC CATALYSIS 审中-公开
    基于金属催化的交叉反应

    公开(公告)号:WO2007009944A1

    公开(公告)日:2007-01-25

    申请号:PCT/EP2006/064242

    申请日:2006-07-13

    CPC classification number: C07C227/18 C07B2200/05 C07C229/14

    Abstract: The invention relates to a method for preparing tritylated compounds in which protic functional groups are protected with the triphenylmethyl group, method based on the homogeneous catalysis exercised by salts or metal complexes in organic solvents. The invention relates in particular to a method for the selective tritylation of some groups, obtained both directly and by selective detritylation, with methods based on metallic catalysis. The application to amino acids, typical substrates not suitable to be subjected as such to homogeneous tritylations in organic solvents, indicates the ability of the method to extend also to hydrophilic substrates. The method allows to obtain with high yield pertrityl amino acids, N-tritylamino acids or amino acids tritylated only in lateral chain, compounds which heretofore were either difficult to obtain in aqueous solvents or obtainable through indirect methods. All, in any case, are important intermediates in peptide synthesis.

    Abstract translation: 本发明涉及一种制备三苯甲基化合物的方法,其中质子官能团用三苯基甲基保护,基于在有机溶剂中由盐或金属络合物进行均相催化的方法。 本发明特别涉及一种通过直接和通过选择性不相关获得的一些基团的选择性三苯甲基化方法与基于金属催化的方法。 对氨基酸的应用,不适合在有机溶剂中进行均匀三苯甲基化的典型基质表明该方法也延伸到亲水性底物的能力。 该方法允许以高产率的三苯甲基氨基酸,N-三苯甲基氨基酸或仅在侧链中三取代的氨基酸获得,其在以前难以在含水溶剂中获得或通过间接方法获得的化合物。 无论如何,所有这些都是肽合成中的重要中间体。

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