已开发出一种简单有效的方法,使用支持的试剂系统CuBr 2 / Al 2 O 3 -Na 2 CO 3 / Al 2 O 3在一个锅中由β-酮酸酯和二酮合成α-溴酸酯和酮,其中β-酮酸酯首先与CuBr 2 / Al 2 O 3反应,产物α-溴-β-酮酸酯与Na 2 CO 3 / Al 2 O 3反应以高产率得到最终产物α-溴酸酯。
Renin inhibitors containing isosteric replacements of the amide bond connecting the P3 and P2 sites
作者:James S. Kaltenbronn、J. P. Hudspeth、E. A. Lunney、B. M. Michniewicz、E. D. Nicolaides、J. T. Repine、W. H. Roark、M. A. Stier、F. J. Tinney
DOI:10.1021/jm00164a058
日期:1990.2
Renin inhibitors having 13 different isosteres connecting the P3 and P2 positions have been prepared. Synthetic routes and in vitro activity exhibited by these compounds are discussed. The two most potent compounds, 47 and 48, contained the hydroxyethylene isostere, psi [CHOHCH2], and had IC50 values of 61 and 22 nM, respectively.
Synthesis and Reactions of 2,2-[60]Fullerenoalkanoyl Chlorides
作者:Tomoyuki Tada、Yasuhiro Ishida、Kazuhiko Saigo
DOI:10.1021/jo052399l
日期:2006.2.1
2,2-[60]Fullerenoalkanoyl chlorides (1a−d) were easily and securely prepared from the corresponding 2,2-[60]fullerenoalkanoic acids (2a−d) by the reaction with thionyl chloride in an unusual mixed solvent, CH2Cl2/dioxane. The characterization of 1a−d by 1H and 13C NMR, FT-IR, and MALDI-TOF-MASS was conducted for the first time. The 2,2-[60]fullerenoalkanoyl chlorides thus obtained were readily converted
Multiple Absolute Stereocontrol in Cascade Lactone Formation via Dynamic Kinetic Resolution Driven by the Asymmetric Transfer Hydrogenation of Keto Acids with Oxo-Tethered Ruthenium Catalysts
straightforward asymmetric construction of chiral fused γ- and δ-lactones containing multiple contiguousstereocenters was successfully developed by either (1) the dynamic kinetic resolution-asymmetric transfer hydrogenation (DKR-ATH) reaction using oxo-tethered Ru(II) complexes followed by syn-selective lactonization or (2) the tandem DKR-ATH/lactonization in combination with asymmetric hydrogenation
SUBSTITUTED BENZIMIDAZOLONE DERIVATIVES, MEDICAMENTS COMPRISING THEM AND THEIR USE
申请人:Arndt Torsten
公开号:US20120172335A1
公开(公告)日:2012-07-05
The present invention relates to novel benzimidazolone derivatives of the general formula (I) in which the substituents R
1
, R
2
, R
3
, A
1
, A
2
, and B are as defined in claim
1
, medicaments comprising these, and the use thereof for the prophylaxis and/or treatment of vasopressin-dependent diseases.
Substituted benzimidazolone derivatives, medicaments comprising them and their use
申请人:Abbott GmbH & Co. HG
公开号:US08119676B2
公开(公告)日:2012-02-21
The present invention relates to novel benzimidazolone derivatives of the general formula (I) in which the substituents R1, R2, R3, A1, A2, and B are as defined in claim 1, medicaments comprising these, and the use thereof for the prophylaxis and/or treatment of vasopressin-dependent diseases.