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Wender’s syntheses of the two pseudoguainanes confertin (50) and damsinic acid (51) and Pier’s approaches towards four sesquiterpenoid natural products using the DVCPR with both trans- and cis-divinylcyclopropanes. The yields for 53 to 54 and 61 to 62 are stated as yield over several steps (77% over three steps and 98% over two steps, respectively).
