Five New Biflavonoids from Daphne aurantiaca

[摘要]：Five new biflavonoids, 1-5, were isolated from the stem bark of Daphne aurantiaca. The structures were elucidated as 2,2 ''-bisteppogenin (1), 2,2 ''-bisteppogenin 7-O-beta-glucopyranoside (2), 2 ''-dehydroxy-2,2'''-bisteppogenin (3), 2 ''-dehydroxy-2,2'''-bisteppogenin 7-O-beta-glucopyranoside (4), and 7-ethoxyneochamaejasmin B (5) on the basis of spectral analyses.

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