CATALYTIC GLYCOSYLATION WITH DESIGNER THIOGLYCOSIDE AND NOVEL PROTECTING GROUPS FOR SAME AND FOR SYNTHESIS OF OLIGOSACCHARIDES
    1.
    发明申请
    CATALYTIC GLYCOSYLATION WITH DESIGNER THIOGLYCOSIDE AND NOVEL PROTECTING GROUPS FOR SAME AND FOR SYNTHESIS OF OLIGOSACCHARIDES 审中-公开
    具有设计者硫代酰胆碱的催化糖苷化和用于合成寡糖的新型保护基团

    公开(公告)号:US20170022237A1

    公开(公告)日:2017-01-26

    申请号:US15192680

    申请日:2016-06-24

    申请人: Xinyu Liu

    发明人: Xinyu Liu

    IPC分类号: C07H1/00 C07H15/203

    摘要: A catalytic glycosylation method comprising: installing thioether to an anomeric carbon of a carbohydrate; and catalytically activating the thioether with a non-oxophilic Lewis acid. The thioether may comprise an anomerically stable thioether leaving group. The catalytic glycosylation method may further comprise: utilizing an acid-sensitive ester protecting group as permanent protecting group or using a reactivity-based one-pot glycosylation that employs a single-component catalyst to accelerate an oligosaccharide assembly process. A protecting group to mask hydroxyl functionalities in the production of oligosaccharides, natural products or any molecule having a hydroxyl group comprising an acid-labile ester protecting group.

    摘要翻译: 一种催化糖基化方法,包括:将硫醚装入碳水化合物的异头碳中; 并用非极性路易斯酸催化活化硫醚。 硫醚可以包含端基异构稳定的硫醚离去基团。 催化糖基化方法还可以包括:使用酸敏感的酯保护基团作为永久保护基团,或者使用采用单组分催化剂加速寡糖组装过程的基于反应性的一锅糖基化。 在生产低聚糖,天然产物或具有包含酸不稳定酯保护基团的羟基的任何分子中掩蔽羟基官能团的保护基团。

    Preparation and its use of derivatization reagent for detecting L-carnitine or D-carnitine
    3.
    发明授权
    Preparation and its use of derivatization reagent for detecting L-carnitine or D-carnitine 有权
    制备及其用于检测L-肉毒碱或D-肉碱的衍生化试剂

    公开(公告)号:US08709819B2

    公开(公告)日:2014-04-29

    申请号:US13121388

    申请日:2009-10-09

    IPC分类号: G01N30/02

    摘要: A preparation method and its use of derivatization reagent for detecting L-carnitine or D-carnitine are provided. The present reagent is stable. It can be used for detecting L-carnitine or D-carnitine accurately and sensitively. That is to say, the reagent is applied to detecting the amount of synthesized or natural L-carnitine and the amount of mixing D-carnitine. The compound reagent is used for determining the chiral isomers of chemicals, biological reagents, health care reagents, cosmetic, body fluids and various foods, which contain L-carnitine or/and D-carnitine, and optical isomers of other chiral amino acids.

    摘要翻译: 提供了一种制备方法及其用于检测L-肉碱或D-肉毒碱的衍生试剂的用途。 本试剂稳定。 它可以准确,灵敏地检测左旋肉碱或D-肉毒碱。 也就是说,试剂用于检测合成的或天然的L-肉毒碱的量和D-肉毒碱的混合量。 化合物试剂用于测定含有左旋肉碱或/或D-肉毒碱的化学物质,生物试剂,保健剂,化妆品,体液和各种食品的手性异构体,以及其他手性氨基酸的光学异构体。

    COMPOUNDS AND METHOD FOR REDUCING URIC ACID
    5.
    发明申请
    COMPOUNDS AND METHOD FOR REDUCING URIC ACID 有权
    化合物和减少尿酸的方法

    公开(公告)号:US20130259850A1

    公开(公告)日:2013-10-03

    申请号:US13890789

    申请日:2013-05-09

    摘要: Uric acid in mammalian subjects is reduced and excretion of uric acid is increased by administering a compound of Formula I or a pharmaceutically acceptable salt thereof. In Formula I m is 0, 1, 2, 3 or 4; n is 0 or 1; m+n is not more than 4;t is 0 or 1; q is 0 or 1; and r is 0, 1 or 2. R6 is hydrogen, methyl or ethyl and R12 is hydrogen or methyl, or R6 is hydroxy and R12 is hydrogen, or R6 is O and R12 is absent, or R6 and R12 together are —CH2CH2—. R7 is hydrogen or alkyl having from 1 to 3 carbon atoms. One of R8 and R9 is alkyl having from 1 to 3 carbon atoms, and the other is hydrogen or alkyl having from 1 to 3 carbon atoms. R10 is hydrogen, halo, alkyl having from 1 to 3 carbon atoms or alkoxy having from 1 to 3 carbon atoms. X is C(O) and r is 0 and t is 0; or X is NH(R11) wherein R11 is hydrogen or alkyl having from 1 to 3 carbon atoms. A is phenyl, unsubstituted or substituted by 1 or 2 groups selected from halo, hydroxy, methyl, ethyl, perfluoromethyl, methoxy, ethoxy, and perfluoromethoxy; or a 5 or 6 membered heteroaromatic ring having 1 or 2 ring heteroatoms selected from N, S and O and the heteroaromatic ring is covalently bound to the remainder of the compound of Formula I by a ring carbon; or cycloalkyl having from 3 to 6 ring carbon atoms wherein the cycloalkyl is unsubstituted or one or two ring carbons are independently monosubstituted by methyl or ethyl. The uric acid-lowering effects of the Compounds of Formula I are used to treat or prevent a variety of conditions including gout, hyperuricemia, elevated levels of uric acid that do not meet the levels customarily justifying a diagnosis of hyperuricemia, renal dysfunction, kidney stones, cardiovascular disease, risk for developing cardiovascular disease, tumor-lysis syndrome, and cognitive impairment.

    摘要翻译: 减少哺乳动物受试者的尿酸,通过给予式I化合物或其药学上可接受的盐来增加尿酸的排泄。 在式I中,m为0,1,2,3或4; n为0或1; m + n不大于4; t为0或1; q为0或1; R6是氢,甲基或乙基,R12是氢或甲基,或R6是羟基,R12是氢,或R6是O,R12不存在,或者R6和R12一起是-CH 2 CH 2 - 。 R7是氢或具有1至3个碳原子的烷基。 R8和R9中的一个是具有1至3个碳原子的烷基,另一个是氢或具有1至3个碳原子的烷基。 R 10是氢,卤素,具有1至3个碳原子的烷基或具有1至3个碳原子的烷氧基。 X为C(O),r为0且t为0; 或X是NH(R 11),其中R 11是氢或具有1至3个碳原子的烷基。 A是未取代或被1或2个选自卤素,羟基,甲基,乙基,全氟甲基,甲氧基,乙氧基和全氟甲氧基的基团取代的苯基; 或具有1或2个选自N,S和O的环杂原子的5或6元杂芳环,杂芳环通过环碳与式I化合物的其余部分共价结合; 或具有3至6个环碳原子的环烷基,其中环烷基是未取代的或一个或两个环碳原子被甲基或乙基独立地单取代。 式I化合物的尿酸降低作用用于治疗或预防各种病症,包括痛风,高尿酸血症,升高的尿酸水平,不符合常规诊断高尿酸血症,肾功能不全,肾结石的水平 心血管疾病,发展心血管疾病的风险,肿瘤溶解综合征和认知障碍。