Stereocontrolled Formation of a [4.4]Heterospiro Ring System with Unexpected Inversion of Configuration at the Spirocenter
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https://figshare.com/articles/dataset/Stereocontrolled_Formation_of_a_4_4_Heterospiro_Ring_System_with_Unexpected_Inversion_of_Configuration_at_the_Spirocenter/4484546
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Stereoselective construction of the 1,3-diazaspiro[4.4]nonane core skeleton of massadine and related dimeric pyrrole–imidazole alkaloids is a synthetic challenge. We describe herein the synthesis of all C13/14 diastereomers of this spiro molecule through controlled oxidation and epimerization of the C13 spirocenter under mild acidic conditions.
创建时间：
2016-12-20
