Natural Product Communications 2012-Jun
Synthesis of taxane ABC tricyclic skeleton from lycoctonine.
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A new conversional synthesis of the ABC ring system of taxoids from the C19-diterpenoid alkaloid lycoctonine was developed in 6 steps with 2% overall yield. The distinctive features of the conversion include pinacol rearrangement, enlargement of ring B, and opening of a four-membered ring.