Unprecedented CuI/CuII‐assisted tandem catalysis allowing an Ullmann/Chan–Evans–Lam sequence was achieved. This three‐component, one‐pot reaction triggered by a change in the oxidation state of the metal leads to the selective N1,N3‐diarylation of 3‐aminopyrazole. This new method should be a valuable tool for small‐molecule drug discovery that requires suitable regio‐ and/or chemoselective strategies
前所未有的Cu I / Cu II辅助串联催化,实现了Ullmann / Chan–Evans–Lam序列。这种由金属的氧化态变化引发的三组分一锅法反应导致3-氨基吡唑的选择性N 1,N 3-二芳基化。这种新方法应该是发现小分子药物的有价值的工具,它需要适当的区域和/或化学选择策略来使含氮杂环的N-芳基化。
N-aryl-4,5-diaminopyrazoles and dyes containing said compounds
申请人:Goettel Otto
公开号:US20050081312A1
公开(公告)日:2005-04-21
N-Aryl-4,5-diaminopyrazole of formula (I) or a physiologically compatible salt thereof of an organic or inorganic acid
wherein
R1 and R2 independently of each other denote a hydrogen atom, a straight-chain or branched C
1
-C
6
-alkyl group, a hydroxyl group, a straight-chain or branched C
1
-C
6
-monohydroxyalkyl group, a straight-chain or branched C
3
-C
6
-dihydroxyalkyl group, a straight-chain or branched C
1
-C
6
-alkoxy group, a straight-chain or branched C
1
-C
6
-hydroxyalkoxy group, a straight-chain or branched C
3
-C
6
-dihydroxyalkoxy group, an amino group, a C
1
-C
4
-monoalkylamino group, a di(C
1
-C
4
)-alkylamino group, a halogen atom, a difluoromethyl group or a trifluoromethyl group; Y stands for a nitrogen atom or a C—R3 group, wherein C is a carbon atom of the aromatic ring and R3 is a hydrogen atom, a halogen atom, a straight-chain or branched C
1
-C
6
-alkyl group, a straight-chain or branched C
1
-C
6
-hydroxyalkyl group, a straight-chain or branched C
1
-C
6
-alkoxy group, a straight-chain or branched C
2
-C
6
-hydroxyalkoxy group or a straight-chain or branched C
2
-C
6
-alkoxyalkoxy group; X denotes an acid radical and n has a value from 0 to 3; provided that when Y stands for a C—R3 group, at least one of the R1, R2 and R3 groups is different from hydrogen; as well as colorants for keratin fibers containing these compounds.
Discovery of a novel 1H-pyrazole- [3,4-b] pyridine-based lysine demethylase 5B inhibitor with potential anti-prostate cancer activity that perturbs the phosphoinositide 3-kinase/AKT pathway
Lysine demethylase 5B (KDM5B) is a member of the Jumonji AT-rich interactive domain 1 family. Its main function is to demethylate di/trimethyl histone H3 lysine 4 and it plays a crucial role in the occurrence and development of cancer. In this study, we performed structure-based optimization of KDM5B inhibitors based on our previous work and the most active compound we synthesized was 11ad. Molecular
Reaktivfarbstoffe der allgemeinen Formel
in der
E einen Rest der Formel
oder
K der Rest einer Kupplungskomponente,
R Wasserstoff oder ein Substituent,
X eine reaktive Gruppe,
m die Zahlen 1 oder 2 und
n die Zahlen 1, 2, 3 oder 4 bedeuten und wobei der Ring A noch weiter substituiert sein kann.
Die Farbstoffe eignen sich vorzüglich zum Färben von hydroxylgruppenhaltigen Fasern, insbesondere Cellulosefasern wie Baumwolle.
通式为
中的
E 是式中的一个基团
或
K 是偶联组分的基团、
R 是氢或取代基、
X 是活性基团、
m 表示数字 1 或 2,n 表示数字 1、2、3 或 4。
n 表示数字 1、2、3 或 4,其中环 A 可被进一步取代。
这些染料特别适用于含有羟基的纤维染色,尤其是纤维素纤维,如棉花。