会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明申请
    • Method for optically resolving a racemic alpha-substituted heterocyclic carboxylic acid using enzyme
    • 使用酶旋光拆分外消旋的α-取代杂环羧酸的方法
    • US20020025565A1
    • 2002-02-28
    • US09871360
    • 2001-05-31
    • Ki-Nam UhmSang-Chul LimJong-Ho Lim
    • C12P017/00C12P017/04C12P017/10C12P013/24
    • C12P17/04C12P41/005
    • Disclosed is a method for optically resolving a racemic null-substituted heterocyclic carboxylic acid (null-HCCA) by taking advantage of enantioselectivity of enzymes. null-HCCA is reacted with alcohol to give a racemic null-HCCA ester, which is then reacted with an enzyme with enantioselectivity, whereby either R-form or S-form of the racemate is hydrolyzed. Extraction with an organic solvent can obtain enantiomers of the null-HCCA ester. The extracted enantiomeric null-HCCA ester is converted to enantiomeric null-HCCA by catalytic hydrogenation in an organic solution or by enzymatic hydrolysis in an aqueous solution. Thus, a racemic mixture of null-HCCA can be optically resolved with high optical purity at high yields as well as at low cost.
    • 公开了通过利用酶的对映选择性来光学拆分外消旋的α-取代的杂环羧酸(α-HCCA)的方法。 α-HCCA与醇反应得到外消旋的α-HCCA酯,然后与具有对映选择性的酶反应,由此外消旋体的R-型或S-型被水解。 用有机溶剂萃取可以得到α-HCCA酯的对映异构体。 通过在有机溶液中的催化氢化或通过在水溶液中的酶水解将所提取的对映异构体α-HCCA酯转化成对映异构体的α-HCCA。 因此,α-HCCA的外消旋混合物可以以高产率和低成本以高光学纯度光学解析。
    • 9. 发明申请
    • Process for the preparation of 2,4-dideoxyhexoses and 2,4,6-trideoxyhexoses
    • 2,4-二脱氧己糖和2,4,6-三脱氧己糖的制备方法
    • US20040171125A1
    • 2004-09-02
    • US10481303
    • 2003-12-19
    • Joannes Gerardus Theodorus KierkelsDaniel MinkSven Panke
    • C12P017/06C12P017/04
    • C12N9/88C12P19/02
    • The invention relates to a process for the preparation of a 2,4-dideoxyhexose or a 2,4,6-trideoxyhexose from a substituted or unsubstituted carbonyl compound with at least 2 carbon atoms and at least one null-hydrogen atom and a substituted or unsubstituted aldehyde in the presence of an aldolase and water, the reaction between the substituted or unsubstituted carbonyl compound with at least 2 carbon atoms and at least one null-hydrogen atom and the substituted or unsubstituted aldehyde being carried out at a carbonyl concentration of at most 6 moles/l of reaction mixture and the final concentration of the 2,4-dideoxyhexose or the 2,4,6-trideoxyhexose being at least 2 mass % of the reaction mixture. The invention also relates to the use of a 2,4-dideoxyhexose or a 2,4,6-trideoxyhexose obtained by means of a process according to the invention in the preparation of a medicine, particularly in the preparation of a statine.
    • 本发明涉及从具有至少2个碳原子和至少一个α-氢原子的取代或未取代的羰基化合物和取代或未取代的羰基化合物制备2,4-二脱氧己糖或2,4,6-三脱氧己糖的方法, 未取代的醛在醛缩酶和水的存在下,取代或未取代的羰基化合物与至少2个碳原子和至少一个α-氢原子之间的反应和取代或未取代的醛以最多的羰基浓度进行 6摩尔/升的反应混合物,2,4-二脱氧己糖或2,4,6-三脱氧己糖的最终浓度为反应混合物的至少2质量%。 本发明还涉及通过根据本发明的方法获得的2,4-二脱氧己糖或2,4,6-三脱氧己糖在制备药物中的用途,特别是在制备他汀类药物中的用途。