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    • 6. 发明公开
    • PROCESS FOR TETRAAZACYCLOALKANE PREPARATION
    • 四氮杂环庚烷制备方法
    • EP0815090A1
    • 1998-01-07
    • EP96904202.0
    • 1996-03-01
    • NYCOMED IMAGING ASCOCKBAIN, Julian Roderick Michaelson
    • SANDNES, Rolf, WiggoVASILEVSKIS, JanisUNDHEIM, KjellGACEK, Michel
    • C07D487C07D257
    • C07D257/02
    • The present invention provides a synthetic route for tetraazacycloalkane preparation which facilitates heteropoly-N-alkylation of the macrocyclic product, and is thereby beneficial for the production of chelating agents and chelates useful in diagnostic imaging. The process involves (i) reacting a tetraazaalkane with a bridging agent to couple for amine nitrogens of said tetraazaalkane to a bridging moiety to yield a fused tricyclic intermediate, (ii) reacting said intermediate to introduce an alkylene bridge between the secondary amine nitrogens in the outer rings of the fused tricyclic intermediate, optionally be decoupling an alkanediylidene bridging moiety from the tertiary amine nitrogens at the ring fusion sites of the fused tricyclic intermediate, and (iii) where necessary, decoupling said bridging moiety to yield a macrocyclic tetraazacycloalkane.
    • 本发明提供了用于促进大环产物的杂多-N-烷基化的四氮杂环烷制备的合成路线,并且因此有利于制备用于诊断成像的螯合剂和螯合物。 该方法包括(i)使四烷基烷与桥联剂反应以将所述四烷基烷的胺氮偶联至桥连部分以产生稠合的三环中间体,(ii)使所述中间体在所述仲胺氮之间引入亚烷基桥 稠合的三环中间体的外环,任选地将烷二亚基桥连部分从稠合三环中间体的环稠合位点处的叔胺氮上去偶联,和(iii)必要时将所述桥连部分去偶合以产生大环四氮杂环烷。