Chemistry Letters p. 91 - 94 (1989)
Update date:2022-08-16
Topics:
Kato, Nobuo
Wu, Xue
Tanaka, Shinya
Takeshita, Hitoshi
An improved eight-membered ring closure by means of a Lewis acid-catalyzed ene-reaction of an iridoid dimer produced a tricyclic derivative wich was further converted to cycloaraneosene and its congener, "hydroxycycloaraneosene".Total synthesis of the latter established its structure to be 8β-hydroxy derivative, not as the originally-proposed 9α-.
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