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    • 3. 发明申请
    • METHOD FOR PREPARATION OF AN INTERMEDIATE DYE PRODUCT
    • 制备中间染料产品的方法
    • WO02000642A1
    • 2002-01-03
    • PCT/US2001/019981
    • 2001-06-22
    • C07D335/02C07D345/00C07D335/00
    • C07D335/02C07D345/00
    • The present invention provides a novel method for the synthesis of an intermediate dye product having the formula (A), wherein L is S, Te, or Se; R and R are either the same or different aryl or alkyl compounds; R is hydrogen or a short chain alkyl group; and Z is an anion. The process to formulate this intermediate compound entails reacting an R -acetylene compound with an R -acetylene compound (compounds A) into an enol ether compound with the R and/or R constituents (compound D). And from compound D, it forms into an intermediate dye compound having an L-based cyclic ring with the R and/or R constituents (compound F). With compound F the desired dye can be made with a greater overall yield for mass production.
    • 本发明提供了一种合成具有式(A)的中间体染料产品的新方法,其中L为S,Te或Se; R 1和R 2可以是相同或不同的芳基或烷基化合物; R 3是氢或短链烷基; Z为阴离子。 制备该中间体化合物的方法需要将R 1 - 乙炔化合物与R 2 - 乙炔化合物(化合物A)反应进入具有R 1和/或R 2成分的烯醇醚化合物( 化合物D)。 并且从化合物D,它形成具有R 1和/或R 2成分(化合物F)的具有L基环状的中间体染料化合物。 对于化合物F,可以制备所需的染料,具有更大的总产率用于批量生产。
    • 5. 发明申请
    • GLYCOSIDASE INHIBITORS AND PREPARATION THEREOF
    • 甘氨酸酶抑制剂及其制备方法
    • WO0149674A3
    • 2001-11-29
    • PCT/CA0100010
    • 2001-01-05
    • UNIV FRASER SIMONPINTO BRIAN MJOHNSTON BLAIR DGHAVAMI AHMAD
    • PINTO BRIAN MJOHNSTON BLAIR DGHAVAMI AHMAD
    • C07D333/32A61K31/33A61K31/381A61K31/40A61P3/08A61P3/10A61P25/28A61P35/00A61P35/04A61P43/00C07B61/00C07D207/12C07D333/46C07D345/00C07D405/06C07D409/06C07D421/06C07D497/04C07D211/04C07D211/92C07D335/00
    • C07D333/46C07D207/12C07D345/00
    • A method for synthesizing Salacinol, its stereoisomers, and non-naturally occurring selenium and nitrogen analogues thereof having formula (I). The compounds are potentially useful as glycosidase inhibitors. The synthetic schemes comprise reacting a cyclic sulfate with a 5-membered ring sugar containing a heteroatom (X). The heteroatom preferably comprises sulfur, selenium, or nitrogen. The cyclic sulfate and ring sugar reagents may be readily prepared from carbohydrate precursors, such as D-glucose, L-glucose, D-xylose and L-xylose. The target compounds are prepared by opening of the cyclic sulfates by nucleophilic attack of the heteroatoms on the 5-membered ring sugars. The resulting heterocyclic compounds have a stable, inner salt structure comprising a heteroatom cation and a sulfate anion. The synthetic schemes yield various stereoisomers of the target compounds in moderate to good yields with limited side-reactions. In an alternative embodiment of the invention, the cyclic sulfate may be similarly reacted with a 6-membered ring sugar containing a heteroatom (X) to yield a compound having formula (XII).
    • 一种用于合成具有式(I)的Salacinol,其立体异构体和非天然存在的硒和氮类似物的方法。 这些化合物可能用作糖苷酶抑制剂。 合成方案包括使环硫酸盐与含有杂原子(X)的5元环糖反应。 杂原子优选包含硫,硒或氮。 环状硫酸盐和环糖试剂可以容易地从碳水化合物前体如D-葡萄糖,L-葡萄糖,D-木糖和L-木糖制备。 通过在5元环糖上的杂原子的亲核攻击来打开环状硫酸盐来制备目标化合物。 所得的杂环化合物具有包含杂原子阳离子和硫酸根阴离子的稳定的内盐结构。 合成方案以有限的副反应以中等到良好的产率产生目标化合物的各种立体异构体。 在本发明的一个替代实施方案中,环状硫酸盐可以类似地与含有杂原子(X)的6元环糖反应,得到具有式(XII)的化合物。