Direct functionalization of quinoxalin-2(1<i>H</i>)-one with alkanes: C(sp<sup>2</sup>)–H/C(sp<sup>3</sup>)–H cross coupling in transition metal-free mode
作者:Swati Singh、Neha Dagar、Sudipta Raha Roy
DOI:10.1039/d1ob00665g
日期:——
Considering the significance of pharmaceutically important heterocycles, efficient and highly versatileprotocols for the functionalization of diverse heterocycles with easily accessible feedstock are crucial. Here, we have reported selective alkylation of quinoxalin-2(1H)-one with a broad class of hydrocarbons having different C(sp3)–H bonds with varying bond strengths using di-tert-butyl peroxide
Synthesis and Structure-Activity Relationship Studies of Quinoxaline Derivatives as Aldose Reductase Inhibitors
作者:Bobin Wu、Yanchun Yang、Xiangyu Qin、Shuzhen Zhang、Chaojun Jing、Changjin Zhu、Bing Ma
DOI:10.1002/cmdc.201300324
日期:2013.12
ARIs for diabetes: A series of 2‐(3‐benzyl‐2‐oxoquinoxalin‐1(2H)‐yl)acetic acid derivatives were designed and synthesized as inhibitors of aldosereductase (AR), a novel target for the treatment of diabetes complications. Most of the derivatives proved to be potent and selective, with IC50 values in the low nanomolar to micromolar range.
Regioselective C-3-alkylation of quinoxalin-2(1<i>H</i>)-ones <i>via</i> C–N bond cleavage of amine derived Katritzky salts enabled by continuous-flow photoredox catalysis
An efficient, transitionmetal-free visible-light-driven continuous-flow C-3-alkylation of quinoxalin-2(1H)-ones has been demonstrated by employing Katritzky salts as alkylating agents in the presence of eosin-y as a photoredox catalyst and DIPEA as a base at roomtemperature. The present protocol was accomplished by utilizing abundant and inexpensive alkyl amine (both primary and secondary alkyl)
在曙红-y 作为光氧化还原催化剂的情况下,使用 Katritzky 盐作为烷基化剂,证明了喹喔啉-2(1H)-酮的高效、无过渡金属、可见光驱动的连续流 C-3-烷基化和DIPEA作为室温下的碱。本方案是通过利用丰富且廉价的烷基胺(伯烷基胺和仲烷基胺)来完成的,并且将一些氨基酸原料转化为它们相应的氧化还原活性吡啶鎓盐,随后转化为烷基自由基。以中等到高产率合成了多种 C-3-烷基化喹喔啉-2(1H)-酮。此外,这种对环境无害的方案是在基于 PFA(全氟烷氧基烷烃)毛细管的微型反应器中在蓝色 LED 照射下进行的,与间歇系统(16 h)。
Exploring new selective 3-benzylquinoxaline-based MAO-A inhibitors: Design, synthesis, biological evaluation and docking studies
作者:Sherine N. Khattab、Shimaa A.H. Abdel Moneim、Adnan A. Bekhit、Abdel Moneim El Massry、Seham Y. Hassan、Ayman El-Faham、Hany Emary Ali Ahmed、Adel Amer
DOI:10.1016/j.ejmech.2015.02.020
日期:2015.3
scaffold based on our earlier findings. Series of N′-(3-benzylquinoxalin-2-yl)acetohydrazide, 4a, N′-(3-benzylquinoxalin-2-yl)benzohydrazide derivatives 4b–f, N′-[2-(3-benzyl-2-oxoquinoxalin-1(2H)-yl)acetyl]benzohydrazide derivatives 7a–d, (9H-fluoren-9-yl)methyl 1-[2-(2-(3-benzyl-2-oxoquinoxalin-1(2H)-yl)acetyl)-hydrazinyl]-2-ylcarbamate derivatives 8a–c, 2-(3-benzyl-2-oxoquinoxalin-1(2H)-yl)-N′-benzylidene
Halting colorectal cancer metastasis via novel dual nanomolar MMP-9/MAO-A quinoxaline-based inhibitors; design, synthesis, and evaluation
作者:Mohammed Salah Ayoup、Marwa M. Abu-Serie、Laila F. Awad、Mohamed Teleb、Hanan M. Ragab、Adel Amer
DOI:10.1016/j.ejmech.2021.113558
日期:2021.10
quinoxaline-based dual MMP-9/MAO-A inhibitors were synthesized to suppress CRC progression. The designrationale combines the thematic pharmacophoric features of MMP-9 and MAO-A inhibitors in hybrid scaffolds. All derivatives were initially screened via MTT assay for cytotoxic effects on normal colonocytes to assess their safety profiles, then evaluated for their anticancer potential on HCT116 cells overexpressing