Benzofused lactams, especially indolin‐2‐one and dihydroquinolin‐2‐one are popular structural motives in durgs and natural products. Herein, we developed a room temperature and robust synthesis of benzofused lactams through cobalt(III)‐catalyzed C(sp2)−H amidation. In this protocol, in‐situ formation of Cp*Co(III)(ligand) catalyst from Cp*Co(CO)I2 and ligand simplify the synthetic effort of cobalt
2-dioxazol-5-ones to form dihydroquinoline-2-ones in excellent yields with excellent regioselectivity via a formal intramolecular arene C(sp2)–Hamidation. The reactions of the 2- and 4-substituted aryl dioxazolones proceeds initially through spirolactamization via electrophilic amidation at the arene site, which is para or ortho to the substituent. A Hammett correlation study showed that the spirolactamization
This invention relates to compounds for the inhibition of histone deacetylase. More particularly, the invention provides for compounds of formula compounds of the Formula (I)
and N-oxides, hydrates, solvates, pharmaceutically acceptable salts, prodrugs and complexes thereof, and racemic and scalemic mixtures, diastereomers and enantiomers thereof, wherein groups L, M, X and Y are as defined herein.
mechanochemical approach towards 3,4-dihydro-2(1H)-quinolinones by catalysis with FeBr3 has been developed. The solvent-free processes start from readily available dioxazolones, which undergo intramolecularamidation reactions providing the products in good to very high yields. Practically, the reactions are easy to perform, proceed within a short period of time and require only standard ball milling equipment
开发了一种通过 FeBr 3催化制备 3,4-二氢-2(1 H )-喹啉酮的机械化学方法。无溶剂工艺从容易获得的二恶唑酮开始,它经历分子内酰胺化反应,以良好到非常高的产率提供产品。实际上,反应很容易进行,在短时间内进行,并且只需要标准的球磨设备。
Discovery of hydroxamate as a promising scaffold dually inhibiting metallo- and serine-β-lactamases
作者:Xiao-Rong Wu、Wei-Ya Chen、Lu Liu、Ke-Wu Yang
DOI:10.1016/j.ejmech.2023.116055
日期:2024.2
to be observed using the same dose of inhibitor. Mice tests shown that the monotherapy of 1f or 4a in combination with MER significantly reduced the bacterial load of E. coli-NDM-1 and E. coli-OXA-48 cells in liver and spleen, respectively. The discovery in this work offered a promising bifunctional scaffold for creating the specific molecules that dually inhibit MβLs and MβLs, in combating antibiotic-resistant
由 β-内酰胺酶 MβL 和 SβL 介导的细菌感染已发展成为一种紧急的健康威胁,然而,开发一种双重抑制 MβL 和 SβL 的分子具有挑战性。在本工作中,合成了一系列异羟肟酸酯1a - g 、 2a - e 、 3a - c 、 4a - c ,通过1 H和13 C NMR表征并通过HRMS确认。生化检测显示,这些分子双重抑制 MβLs(NDM-1、IMP-1)和 SβLs(KPC-2、OXA-48),IC 50值范围为 0.64–41.08 和 1.01–41.91 μM( 1a除外)。和1d对 SβLs,IC 50 > 50 μM) 和1f被发现是最好的抑制剂,IC 50值分别在 0.64–1.32 和 0.57–1.01 μM 范围内。机制评估表明, 1f非竞争性、不可逆地抑制NDM-1和KPC-2, K i值为2.5和0.55 μM,是MβLs和SβLs的时间和剂量依赖性抑制剂。