A new convenient asymmetric approach to herbarumin Ⅲ

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The asymmetric total synthesis of herbarumin Ⅲ 3, a naturally occurred phytotoxin, along with 8-epi-herbarumin Ⅲ 22, was succeeded in 12 steps from n-butyraldehyde based on Browns asymmetric allylation, taking modified Julia olefination and Yamaguchis macro-lactonization as key steps.
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