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    • 6. 发明授权
    • Method for making debromohymenialdisine and analogs thereof
    • 制备脱血管麻黄碱及其类似物的方法
    • US06211361B1
    • 2001-04-03
    • US09357687
    • 1999-07-20
    • David A. HorneKenichi Yakushijin
    • David A. HorneKenichi Yakushijin
    • C07D48704
    • C07D487/04
    • A method for making debromohymenialdisine (DBH) 2 and analogs thereof is described. One embodiment of the present method first comprises forming hymenin 4, and then converting hymenin into DBH 2 as described herein. One such embodiment first comprises providing a compound having Formula 3 where R is independently selected from the group consisting of hydrogen and lower aliphatic, and X is independently selected from the group consisting of hydrogen and halogen. A compound having Formula 3, such as Compound 10 with R and X as hydrogen, is then converted to DBH 2 or an analog thereof. An alternative embodiment of the method comprises forming Compound 30 or Compound 32, which are then directly converted to DBH 2. Alternatively, Compound 30 can be converted to Compound 10, which is then subsequently converted to DBH 2 by reaction with a halogen in the presence of an acid. The method of the present invention can be used to make analogs of DBH 2, including alkoxy derivatives, such as Compound 12, and conjugated diene derivatives, such as Compound 14.
    • 描述了制备脱血管麻黄碱(DBH)2及其类似物的方法。 本方法的一个实施方案首先包括形成hymenin 4,然后如本文所述将hymenin转化为DBH 2。 一个这样的实施方案首先包括提供具有式3的化合物,其中R独立地选自氢和低级脂族,并且X独立地选自氢和卤素。 然后将具有式3的化合物,例如具有R和X作为氢的化合物10转化为DBH 2或其类似物。 该方法的替代实施方案包括形成化合物30或化合物32,然后将其直接转化为DBH 2.或者,化合物30可以转化为化合物10,然后将其转化为DBH 2,通过在存在下与卤素反应 的酸。 本发明的方法可用于制备包括烷氧基衍生物如化合物12和共轭二烯衍生物如化合物14的DBH 2的类似物。
    • 9. 发明授权
    • Intermediates for the synthesis of debromohymenialdisine and processes thereof
    • 用于合成脱溴尿路胰岛素的中间体及其过程
    • US06197954B1
    • 2001-03-06
    • US09016748
    • 1998-01-30
    • David A. HorneKenichi Yakushijin
    • David A. HorneKenichi Yakushijin
    • C07D48704
    • C07D487/04
    • The synthesis of C11N5 marine sponge alkaloids (±)-hymenin (1), stevensine (2), hymenialdisine (3), and debromohymenialdisine (4) is described. These natural products are the primary family members of the sponge metabolites that contain a fused pyrrolo[2,3-c]azepin-8-one ring system with either a 2-aminoimidazole (AI) or glycocyamidine appendage. The key steps in the synthesis centered around the generation of novel azafulvenium ions and their regioselective heterodimerization with AI in order to create the tricyclic core. A rarely used protodebromination/oxidation strategy was employed to selectively generate the desired a-bromo substitution pattern seen in hymenialdisine (3). In addition, the AI moiety was shown to be a useful precursor to the glycocyamidine unit found in 3 and 4, which suggests that AI derived natural products may be the biogenic forerunners to glycocyamidine metabolites.
    • 描述了C11N5海绵状海藻生物碱() - 香豆素(1),stevensine(2),hymenialdisine(3)和脱海马氏体(4)的合成。 这些天然产物是海绵代谢物的主要成员,其含有具有2-氨基咪唑(AI)或糖基脒附属物的稠合吡咯并[2,3-c]吖庚因-8-酮环系。 合成中的关键步骤围绕新生的氮杂多氟离子的产生以及其与AI的区域选择性异二聚化以产生三环核心。 使用很少使用的原溴化/氧化策略来选择性地产生在hymenialdisine中看到的所需的α-溴取代模式(3)。 此外,AI部分被证明是在3和4中发现的糖胞苷单位的有用前体,这表明AI衍生的天然产物可能是糖基代谢物的生物来源先驱