Organocatalyzed Aza/Oxa/Thia-Michael-Michael Cascade Reactions to Construct Spirooxindole Tetrahydro

来源 :The 24th International Society of Heterocyclic Chemistry Con | 被引量 : 0次 | 上传用户:zhlinen
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The spirooxindole scaffolds are the structural centerpieces of a large number of alkaloids and unnatural compounds which exhibit pronounced biological and medicinal activities.[1-3] In the past few years, a flourish of asymmetric reactions targeting the construction of highly strained chiral spirooxindole structures have been witnessed.[4] An efficient organocatalytic aza/oxa/thia-MichaelMichael cascade reaction for the asymmetric synthesis of highly functionalized spirooxindole tetrahydroquinolines, chromans and tetrahydrothiophenes scaffolds has been reported through a formal [4/3+2] annulation strategy.
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