Abstract Four new dibenzocyclooctadiene lignans possessing a spirobenzofuranoid skeleton, named propoxyl-, acetoxyl-, benzoyl oxokadsurane and isovaleroyl oxokadsuranol were isolated from the stems of Kadsura coccinea. Their chemical structures were elucidated by spectral and chemical analysis and their absolute configuration determined by a circular dichroic exciton chirality method. Propoxyl oxokadsuranol and benzoyl oxokadsuranol were obtained by hydroxylation of propoxyl oxokadsurane and benzoyl oxokadsurane.

中文翻译：

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具有来自 Kadsura coccinea 的螺苯并呋喃类骨架的二苯并环辛二烯木脂素

摘要 从Kadsura coccinea 的茎中分离得到4 种具有螺苯并呋喃类骨架的新型二苯并环辛二烯木脂素，分别命名为丙氧基-、乙酰氧基-、苯甲酰基氧杂环己烷和异戊酰基氧杂环己醇。通过光谱和化学分析阐明了它们的化学结构，并通过圆二向色激子手性方法确定了它们的绝对构型。通过将丙氧基氧杂环己烷和苯甲酰基氧杂环己烷羟基化得到丙氧基氧杂环己醇和苯甲酰基氧杂环己醇。