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    Process for preparing novel biologically active synthetic molecule 4-(p-methoxyphenyl)-2-amino-butane
    2.
    发明授权
    Process for preparing novel biologically active synthetic molecule 4-(p-methoxyphenyl)-2-amino-butane 失效
    制备新型生物活性合成分子4-（对甲氧基苯基）-2-氨基 - 丁烷的方法

    公开(公告)号：US06252114B1

    公开(公告)日：2001-06-26

    申请号：US09535121

    申请日：2000-03-24

    申请人： Sunil Kumar Chattopadhyay ,  Koneni Venkata Sashidhara ,  Vinayak Tripathi ,  Arun Kumar Tripathi ,  Veena Prajapati ,  Sushil Kumar

    发明人： Sunil Kumar Chattopadhyay ,  Koneni Venkata Sashidhara ,  Vinayak Tripathi ,  Arun Kumar Tripathi ,  Veena Prajapati ,  Sushil Kumar

    IPC分类号： C07C20700

    CPC分类号： C07C43/225 ,  C07C217/62

    摘要： The invention provides a process for the preparation of 4-(p-methoxyphenyl)-2-aminobutane represented by structural formula (1) as shown herein below: [C11H17ON=4-(p-methoxy phenyl)-2-amino butane] said process comprising the steps of, (a) isolating a phenolic compound 4-hydroxyphenyl)-butan-2-ol from the leaves of Taxus wallichiana by known methods, (b) treating the phenolic compound in aqueous mineral acid to obtain a phenolic halide derivative, (c) converting the phenolic halide derivative into its methyl ether by treating it with a methating agent, (d) reacting the methyl ether halide with azide to obtain an azido derivative, and (e) hydrogenating the azido compound to obtain 4-(p-methoxyphenyl)-2-aminobutane.

    摘要翻译： 本发明提供了制备由结构式（1）表示的4-（对甲氧基苯基）-2-氨基丁烷的方法，如下所示：[C 11 H 17 ON = 4-（对甲氧基苯基）-2-氨基丁烷]所述 方法包括以下步骤：（a）通过已知方法从紫杉属的叶子中分离酚类化合物4-羟基苯基 - 丁-2-醇，（b）在无机酸水溶液中处理酚类化合物以获得酚卤化物衍生物 （c）通过用甲基化剂处理酚卤化物衍生物转化成甲基醚，（d）使甲基醚卤化物与叠氮化物反应得到叠氮基衍生物，和（e）氢化叠氮化合物得到4-（ 对甲氧基苯基）-2-氨基丁烷。

    Process for the preparation of maltol from plants belonging to the genus Abies
    4.
    发明授权
    Process for the preparation of maltol from plants belonging to the genus Abies 失效
    从属于Abies属的植物制备麦芽酚的方法

    公开(公告)号：US06384246B1

    公开(公告)日：2002-05-07

    申请号：US09792030

    申请日：2001-02-26

    申请人： Sunil Kumar Chattopadhyay ,  Sachin Srivastava ,  Koneni Venkata Sashidhara ,  Vinayah Tripathi ,  Sushil Kumar

    发明人： Sunil Kumar Chattopadhyay ,  Sachin Srivastava ,  Koneni Venkata Sashidhara ,  Vinayah Tripathi ,  Sushil Kumar

    IPC分类号： C07D30940

    CPC分类号： C07D309/40

    摘要： A process has been developed for production of a food flavoring compound maltol which comprises (a) extracting the dried and pulverized leaves of the plants belonging to the genus Abies with an alcohol at 20-40° C. and concentrating the solvent to obtain an alcoholic extract, (b) adsorbing the alcoholic extract with an adsorbent and drying the adsorbed material at a temperature ranging between 20-50° C., (d) partitioning of the adsorbed material between selected solvents consisting of aliphatic hydrocarbon and chlorinated solvent successively, (d) concentrating the chlorinated solvent to a residue and crystallizing it from a suitable organic solvent or mixtures of such solvents to get pure maltol.

    摘要翻译： 已经开发了用于生产食品香料化合物麦芽酚的方法，其包括（a）在20-40℃下用醇在20-40℃下提取属于Abies属的植物的干燥和粉碎的叶子并浓缩溶剂以获得酒精 提取物，（b）用吸附剂吸附醇提取物并在20-50℃的温度范围内干燥吸附的材料，（d）连续地将由脂族烃和氯化溶剂组成的选定溶剂之间的吸附材料分配（（ d）将氯化溶剂浓缩至残余物并将其从合适的有机溶剂或这些溶剂的混合物中结晶得到纯的麦芽酚。