Selective Preparations; 361. A Convenient Preparation of 2- and 4-(1-Imidazolyl)-phenols and their Benzo Analogs using thet-Butyl Group as a Positional Protective Group
Abstract: An object of the present invention is to provide a novel low molecular weight compound exhibiting an osteogenesis-promoting action. This object is achieved by a compound having the general formula (I) or a pharmacologically acceptable salt thereof. In the general formula (I), R1 and R2 represent hydrogen atoms, and the like; R3 represents a hydrogen atom, and the like; X, Y, and Z represent nitrogen atoms, and the like; A represents a phenylene group, and the like; n represents 1 or 2, and the like; and V and W represent oxygen atoms, and the like.
several pinacol or neopentylglycol boronates indicated further potential of the catalyst. The reaction conditions tolerate the hydroxyl and bromo functional groups. The catalytic system also enables to synthesize the mono-N-substituted anilines from primary aliphatic amines. However, the two model compounds for the secondary and aromatic amines, piperidine and aniline, do not react. Two sterically demanding
基于Chan-Lam交叉偶联反应,开发了一种基于使用稳定铜(I)源的现成Cu 2 S / TMEDA系统的催化剂。用1 H-苯并[ d ]咪唑-2(3 H)-1,1 H-苯并[ d ]咪唑和1 H-咪唑以及缺电子,富电子和在室温下,在大气氧的存在下,对空间需求量高的硼酸,以中等至极好的收率得到交叉偶联的产物。另外,1 H-苯并[ d]的偶联反应]咪唑与几种频哪醇或新戊二醇硼酸酯表明该催化剂的进一步潜力。反应条件容许羟基和溴官能团。该催化体系还能够由伯脂族胺合成单-N-取代的苯胺。但是,仲胺和芳族胺的两种模型化合物哌啶和苯胺不会反应。两个空间要求的产品与受限Ç N键的旋转,通过将合成的Ñ 1的-arylation ħ -苯并[ d ]咪唑-2(3 H ^) -酮与ö-甲苯磺酸,能够确认由Chan-Lam交叉偶联反应制得的阻转异构体。此外,已经报道了一锅Chan-Lam和Suzuki-Miyaura反应的例子。
Ionic Self-Assembled Platform of Perylenediimide-Sodium Dodecylsulfate for Detection of Spermine in Clinical Samples
develop a fluorescent “turn‐on” ensemble for the detection of spermine are discussed. The fluorescence of DAB‐PDI (10 μm, Φ=0.55) is efficiently quenched by negatively charged sodium dodecylsulfate (SDS) through the formation of ionic self‐assembled aggregates (charge ratio of negative (N) in SDS to positive (P) in DAB‐PDI (N/P)=9). This negatively charged ionic self‐assembly between DAB‐PDI and SDS has been
Synthesis and Structure–Activity Relationships of Novel Non-Steroidal CYP17A1 Inhibitors as Potential Prostate Cancer Agents
作者:Tomasz M. Wróbel、Oksana Rogova、Katyayani Sharma、Maria Natalia Rojas Velazquez、Amit V. Pandey、Flemming Steen Jørgensen、Frederic S. Arendrup、Kasper L. Andersen、Fredrik Björkling
DOI:10.3390/biom12020165
日期:——
previous work on a benzimidazole scaffold, and their biological activity evaluated. Inhibition of CYP17A1 is an important modality in the treatment of prostate cancer, which remains the most abundant cancer type in men. The biological assessment included CYP17A1 hydroxylase and lyase inhibition, CYP3A4 and P450 oxidoreductase (POR) inhibition, as well as antiproliferative activity in PC3 prostate cancer
An object of the present invention is to provide a novel low molecular weight compound exhibiting an osteogenesis-promoting action. This object is achieved by a compound having the general formula (I) or a pharmacologically acceptable salt thereof. In the general formula (I), R
1
and R
2
represent hydrogen atoms, and the like; R
3
represents a hydrogen atom, and the like; X, Y, and Z represent nitrogen atoms, and the like; A represents a phenylene group, and the like; n represents 1 or 2, and the like; and V and W represent oxygen atoms, and the like.