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).
Absolute configuration of novel marine diterpenoid udoteatrial hydrate synthesis and cytotoxicities of ent-udoteatrial hydrate and its analogues
confirmed by single crystal X-ray determination. The exomethylene lactone was successfully prepared from genipin through a catalytic hydrogenation of C6–C7 double bond in cyclopentene ring in genipin. Our synthesis culminating the synthesis of antipode of udoteatrial hydrate could confirm the absoluteconfiguration of udoteatrial hydrate as (2aS, 4aS, 5S, 7bR). The analogues of antipode of udoteatrial hydrate