An Enantiospecific Route to (+)-(1R, 3S)-cis-Chrysanthemic Acid from (-)-D-Pantolactone(1)

[摘要]：In this paper, a novel route for the synthesis of (+)-(1R,3S)-cis-chrysanthemic acid is described. The use of readily available (-)-D-pantolactone as a starting point, application of ring-closing metathesis to form the cyclopentene intermediate, and Haller-Bauer/Grob-type fragmentation to form the target compound are the highlights of the present synthesis.

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