Synthesis and NMR Studies of <sup>13</sup>C-Labeled Vitamin D Metabolites<sup>1</sup>
作者:William H. Okamura、Gui-Dong Zhu、David K. Hill、Richard J. Thomas、Kerstin Ringe、Daniel B. Borchardt、Anthony W. Norman、Leonard J. Mueller
DOI:10.1021/jo011096y
日期:2002.3.1
proteins. Triple-labeled [7,9,19-(13)C(3)]-vitamin D(3) (56), its 25-hydroxylated and 1 alpha,25-dihydroxylated metabolites (58 and 68, respectively), and other labeled materials have been synthesized via coupling of [9-(13)C]-Grundmann's ketone 39 or its protected 25-hydroxy derivative 43 with labeled A ring enyne fragments 25 or 26. The labeled CD-ring fragment 39 was prepared by a sequence involving
同位素标记的药物分子可用于通过NMR光谱探测与生物宿主(例如膜和蛋白质)相关的配体构象。三标记[7,9,19-(13)C(3)]-维生素D(3)(56),其25-羟基化和1 alpha,25-二羟基化代谢产物(分别为58和68)和其他已通过[9-(13)C] -Grundmann的酮39或其受保护的25-羟基衍生物43与标记的A环烯炔片段25或26的偶联合成了标记的材料。标记的CD环片段39通过序列制备涉及向[Grundmann的烯酮28]的[[(13)C]-甲基碘化碘的格利雅(Grignard)加成,氧化裂解,导致癸二碘化物38的官能团修饰,最后是动力学烯醇化S(N)2环烷基化。C-7,通过在酮醛11上进行的Corey-Fuchs / Wittig工艺,对A环烯炔进行了19次双标记。通过在Wilson-Mazur路线中使用这些标记的片段,C-7,9,19三元(13)C已经制备了标记的代谢