434307-26-3Relevant articles and documents
Method for synthesizing chiral amine compound
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Paragraph 0064; 0071-0073; 0126-0128, (2019/10/01)
The present invention provides a method for synthesizing a chiral amine compound. The method comprises the following steps: (1) reacting a compound of formula I with t-butylsulfonamide in the presenceof a catalyst to obtain a compound having a structure represented by formula II; 2) reacting the compound of the formula II in a hydrogen atmosphere in the presence of an iridium catalyst and a ligand to obtain a compound of formula III; and (3) carrying out a t-butylsulfonyl group removal reaction on the compound of the formula III to obtain the chiral amine compound. The method constructs the structure of sulfonamide by a keto carbonylgroup, and synthesizes the chiral amine compound with the aralkylamine structure by an asymmetric catalytic hydrogenation reaction of the sulfonamide structure, the ee value is generally 80% or above, the highest ee value is 99% or above, the yield of each step reaction can reach 90% or above, and the total yield is high.
3,4-Di-substituted cyclobutene-1,2-diones as CXC-chemokine receptor ligands
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Page 136; 137, (2008/06/13)
There are disclosed compounds of the formula or a pharmaceutically acceptable salt or solvate thereof which are useful for the treatment of chemokine-mediated diseases such as acute and chronic inflammatory disorders and cancer.