Domino protocol for the synthesis of diversely functionalized derivatives of a novel fused pentacyclic antioxidant/anticancer fluorescent scaffold: Pyrazolo[5",1":2',3']pyrimido[4',5':5,6][1,4]thiazino[2,3-b]quinoxaline

被引:4
|
作者
Sheikhi-Mohammareh, Seddigheh [1 ]
Oroojalian, Fatemeh [2 ,3 ]
Beyzaei, Hamid [4 ]
Moghaddam-Manesh, Mohammadreza [5 ]
Salimi, Alireza [1 ]
Azizollahi, Fatemeh [2 ]
Shiri, Ali [1 ]
机构
[1] Ferdowsi Univ Mashhad, Fac Sci, Dept Chem, Mashhad, Iran
[2] North Khorasan Univ Med Sci, Sch Med, Dept Adv Sci & Technol, Bojnurd, Iran
[3] North Khorasan Univ Med Sci, Nat Prod & Med Plants Res Ctr, Bojnurd, Iran
[4] Univ Zabol, Fac Sci, Dept Chem, Zabol, Iran
[5] Iranian Natl Stand Org, Gen Bur Stand Sistan & Baluchestan Prov, Zahedan, Iran
关键词
One-pot; Quinoxaline; Fluorescent; Antioxidant; Anticancer; Pyrazolo[1; 5-a]pyrimidine; thiazino[2; 3-b]quinoxaline; QUINOXALINE DERIVATIVES; REGIOSELECTIVE SYNTHESIS; BIOLOGICAL EVALUATION; EFFICIENT PROTOCOL; ONE-POT; ANTIBACTERIAL; ANTIFUNGAL; CATALYST; CELLS; DOXORUBICIN;
D O I
10.1016/j.talanta.2023.124723
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Rising to the challenge of formidable multi-step reaction needed for the synthesis of polycyclic compounds, an efficient one-pot two-step procedure for the synthesis of densely functionalized novel pyrazolo[5 & DPRIME;,1":2 & PRIME;,3'] pyrimido[4 & PRIME;,5':5,6] [1,4]thiazino[2,3-b]quinoxalines from synthetically accessible starting materials 6-bromo-7chloro-3-cyano-2-(ethylthio)-5-methylpyrazolo[1,5-a]pyrimidine, 3-aminoquinoxaline-2-thiol and some readily accessible alkyl halides was established. The domino reaction pathway involves cyclocondensation/N-alkylation sequence in K2CO3/N,N-dimethyl formamide under heating condition. DPPH free radical scavenging activity of all synthesized pyrazolo[5 & DPRIME;,1":2 & PRIME;,3']pyrimido[4 & PRIME;,5':5,6][1,4]thiazino[2,3-b]quinoxalines was evaluated to determine their antioxidant potentials. IC50 values were recorded in the range of 29-71 & mu;M. N-benzyl substituted derivative represented the most effective antioxidant activity as well as antiproliferative activity against MCF-7 cells. Moreover, fluorescence in solution for these compounds exhibited strong red emission in the visible region (& lambda;flu. = 536-558 nm) with good to excellent quantum yields (61-95%). Due to their interesting fluorescence properties, these novel pentacyclic fluorophores can be used as fluorescent markers and probes for studies in biochemistry and pharmacology.
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页数:11
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