An unusual cationic [2 + 2] cycloaddition in a divergent total synthesis of hongoquercin A and rhododaurichromanic acid A |
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| Authors: | Kurdyumov Aleksey V Hsung Richard P |
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| Institution: | Division of Pharmaceutical Sciences and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53705, USA. |
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| Abstract: | An unusual polyene cyclization pathway that led to a divergent total synthesis of hongoquercin A and rhododaurichromanic acid A is described here. This work uncovered a unique cationic cyclobutane formation that could be relevant to the biosynthetic pathway for the formation of cyclobutane containing terpenoids in addition to rhododaurichromanic acids. |
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