Synthesis of the antipode of udoteatrial hydrate using (+)-genipin as a chiral building block: Determination of the absolute configuration of udoteatrial hydrate
Antipode of novel marine diterpenoid udoteatrial hydrate was synthesized from (+)-genipin as a chiral building block via the key intermediate, exo-methylene lactone. This synthesis confirmed the absolute configuration of udoteatrial hydrate as (2R, 3S, 6S, 7S).