Total synthesis of (±)-cycloclavine and (±)-5-epi-cycloclavine.
Total synthesis of (±)-cycloclavine and (±)-5-epi-cycloclavine.
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DOI:
10.1021/ja2026882
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发表时间:
2011-05-25
影响因子:
15
通讯作者:
Wipf, Peter
中科院分区:
文献类型:
--
作者:
Petronijevic, Filip R.;Wipf, Peter
Novel routes to the naturally occurring indole alkaloid cycloclavine and its unnatural C(5)-epimer are described. Key features include the rapid construction of the heterocyclic core segments by two Diels-Alder reactions. An indole annulation was accomplished by a late-stage intramolecular Diels-Alder furan cycloaddition, and a methylenecyclopropane dienophile was used for a stereoselective intramolecular [4+2] cycloaddition to give the cyclopropa[c]indoline building block present in cycloclavine.
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