Organocatalytic Asymmetric Mannich Addition of 3-Fluorooxindoles to Dibenzo[b,f][1,4]oxazepines: Highly Enantioselective Construction of Tetrasubstituted C-F Stereocenters

被引:20
作者
Li, Bing-Yu [1 ]
Lin, Ye [1 ]
Du, Da-Ming [1 ]
机构
[1] Beijing Inst Technol, Sch Chem & Chem Engn, Beijing 100081, Peoples R China
基金
中国国家自然科学基金;
关键词
HIV-1; REVERSE-TRANSCRIPTASE; NONNUCLEOSIDE INHIBITORS; MICHAEL ADDITION; FLUORINE; DERIVATIVES; ACCESS; STEREOSELECTIVITY; DIBENZOXAZEPINES; PHARMACOLOGY; NITROALKENES;
D O I
10.1021/acs.joc.9b01507
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
3-Fluorooxindoles and the dibenzo[b,f][1,4]oxazepane scaffolds are important pharmacophores that have important application in medicinal chemistry. An organocatalyzed asymmetric Mannich reaction of 3-fluorooxindoles with dibenzo[b,f][1,4]oxazepines affording various seven-member cyclic amines containing chiral tetrasubstituted C-F stereocenters was developed. These reactions which were catalyzed by a bifunctional Cinchona alkaloid-derived thiourea catalyst afforded a wide range of substrates in moderate to high yields with excellent diastereo- and enantioselectivities (up to 88% yield, >20:1 dr and >99% ee). A feasible reaction mechanism was also proposed.
引用
收藏
页码:11752 / 11762
页数:11
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