Cycloadducts of terpene quinones from Taiwania cryptomerioides
Resource
Phytochemistry 46 (1): 169-173
Journal
Phytochemistry
Journal Volume
46
Journal Issue
1
Pages
169-173
Date Issued
1997
Author(s)
Abstract
Four [4 + 2] or [5 + 2] cycloadducts formed from trans-ozic acid and a diterpene or norditerpene quinone were isolated from the leaves of Taiwania cryptomerioides. Among them, the [4+2] cycloadduct (taiwaniadduct I) formed from trans-ozic acid and a norditerpene quinone underwent an intramolecular [2 + 2] cycloaddition on standing at room temperature. The structures of these cycloadducts were determined by spectral analyses and of one by X-ray crystallography.
Type
journal article