Palladium-Catalyzed [4+2] Cycloaddition of Vinyl Benzoxazinanones with 1,3-Indanedione: Approach to Spiro-Tetrahydroquinoline Scaffolds

被引:4
|
作者
Wei, Qinglang [1 ]
Tu, Liang [1 ]
Li, Sen [2 ]
Zheng, Yongsheng [1 ]
Liu, Jikai [1 ]
机构
[1] South Cent Minzu Univ, Sch Pharmaceut Sci, Wuhan 430074, Peoples R China
[2] Hunan Inst Sci & Technol, Dept Chem & Chem Engn, Yueyang 414000, Peoples R China
基金
中国国家自然科学基金;
关键词
spiro-tetrahydroquinolines; 4+2] cycloaddition; vinyl benzoxazinanones; 1,3-indanediones; ASYMMETRIC CONSTRUCTION; DERIVATIVES; HYBRIDS; DESIGN;
D O I
10.1002/ejoc.202300499
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A palladium catalyzed decarboxylative [4+2] cycloaddition of vinyl benzoxazinanones with 2-arylidene indan-1,3-dione has been established, which afford a series of bioactive spiro-tetrahydroquinolines (27 examples) in moderate to good yield (up to 87 %) with high diastereoselectivities. The synthetic utility of this reaction was demonstrated by gram-scale synthesis. Compounds synthesized by this method potently inhibited proliferation in a panel of cancer cell lines. Particularly, the most potent compounds 3 ae, 3 ah, 3 aj and 3 fa displayed selective inhibition of MDA-MB-231 breast carcinoma cells with IC50 values of 1.292, 0.6118, 0.6558, 1.656 and 2.215 & mu;M, respectively. A palladium catalyzed decarboxylative [4+2] cycloaddition of vinyl benzoxazinanones with 1,3-indanedione was developed, affording a series of biologically potential spiro-tetrahydroquinolines. Gram-scale synthesis and product elaboration demonstrated the utility of this method. The product demonstrated exhibited potency in inhibiting MDA-MB-231 cell line.+image
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页数:5
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