Asymmetric biomimetic transamination is a highly attractive method for synthesis of chemically and biologically important chiral amino acids and chiral amines. Development of chiral pyridoxamines/pyridoxals is the key for the reaction. New axially chiral biaryl pyridoxamines based on H4-naphathene skeleton have been developed. The pyridoxamines display good enantioselectivity and high catalytic activity
Abstract An efficient method of synthesis of 1‐tetralones has been achieved featuring a Stille cross‐coupling reaction as the key step.
摘要 以Stille交叉偶联反应为关键步骤,实现了一种有效的1-四氢萘酮合成方法。
Statin-MMP inhibitor combinations
申请人:——
公开号:US20040176393A1
公开(公告)日:2004-09-09
The invention is a pharmaceutical composition comprising an MMP inhibitor and a statin, said composition being useful for treating vascular diseases.
这项发明是一种药物组合物,包括MMP抑制剂和他汀类药物,该组合物可用于治疗血管疾病。
Biphenyl 5,5'-bis-alkanoic acid derivatives, their production and use thereof
申请人:ASAHI KASEI KOGYO KABUSHIKI KAISHA
公开号:EP0470832A2
公开(公告)日:1992-02-12
A compound of formula (I):
in which R is C₁₋₁₂ alkyl;
lower alkyl
wherein X₁ and X₂, which may be the same or different, are each hydrogen or a halogen; cyclohexylmethyl; cyclohexyl; tetrahydro-2H-pyran-1-yl-methyl; carboxy-lower alkyl or chloro-lower alkyl and each n, which may be the same or different, is 2 or 3, or a physiologically acceptable salt thereof.
式 (I) 的化合物:
其中 R 是 C₁₋₁₂ 烷基;
低级烷基
其中 X₁和 X₂可以相同或不同,各自为氢或卤素;环己基甲基;环己基;四氢-2H-吡喃-1-基-甲基;羧基-低级烷基或氯-低级烷基,每个 n 可以相同或不同,为 2 或 3,或其生理上可接受的盐。
Tertiary Amides as Directing Groups for Enantioselective C−H Amination using Ion‐Paired Rhodium Complexes
作者:Kieran J. Paterson、Amit Dahiya、Benjamin D. Williams、Robert J. Phipps
DOI:10.1002/anie.202317489
日期:2024.4.2
Direct amination of benzylic C−H bonds generates important stereocenters. Our approach, in which the chirality of a bimetallic rhodium complex is located on its associated cations, achieves this on tertiary amide-containing substrates to give amination of arylbutyric and arylvaleric acid-derived amides. We believe that the amide most likely interacts directly with the chiral cation to provide a highly