A novel α,β-unsaturated nitrone-aryne [3+2] cycloaddition and its application in the synthesis of the cortistatin core.
A novel α,β-unsaturated nitrone-aryne [3+2] cycloaddition and its application in the synthesis of the cortistatin core.
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DOI:
10.1016/j.tetlet.2008.09.019
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发表时间:
2008-11-17
影响因子:
1.8
通讯作者:
Danishefsky, Samuel J.
中科院分区:
文献类型:
--
作者:
Dai, Mingji;Wang, Zhang;Danishefsky, Samuel J.
We describe here a novel α,β-unsaturated nitrone-aryne [3+2] cycloaddition. The resulting benzoisoxazolines underwent N-O bond reduction–elimination–electrocyclization sequence to furnish a variety of polysubstituted 2H or 2-alkylated-1-benzo-pyrans. The application of this methodology was further demonstrated in the synthesis of the oxa[3.2.1]octene moiety of cortistatin A.
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