Maslivetc VA, Frolova LV, Rogelj S, Maslivetc AA, Rubina M, Rubin M. Metal-Templated Assembly of Cyclopropane-Fused Diazepanones and Diazecanones via exo- trig Nucleophilic Cyclization of Cyclopropenes with Tethered Carbamates.
J Org Chem 2018;
83:13743-13753. [PMID:
30354138 DOI:
10.1021/acs.joc.8b02062]
[Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A strain-release-driven, cation-templated nucleophilic 7- and 8- exo-trig-cyclization of tethered Boc-protected amines to cyclopropenes is described. The featured reaction proceeds in diastereo- and regioselective fashion and allows for preparation of the corresponding 2,5-diazabicyclo[5.1.0]octan-6-ones and 2,6-diazabicyclo[6.1.0]nonan-7-ones as sole products in high yields. Preliminary studies on anticancer activities of these novel cyclopropane-fused medium heterocycles were performed.
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