Abstract
A detailed chemical investigation of the red resins from Dracaena cochinchinensis (Chinese dragon’s blood) yielded five new flavonoid oligomers, named cochinchinenins D-H (1–5), together with a known biflavonoid, cinnabarone (6), and a mixture of two known biflavonoids, socotrin-4′-ol (7) and homoisosocotrin-4′-ol (8). Of these new compounds, 1–3 were biflavonoids and 4 and 5 were triflavonoids. Their structures were determined on the basis of spectroscopic analysis. The isolated compounds were tested for cytotoxicity (Cdc25), antibacterial (PEPT) and antifungal (YNG) activities. 
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Keywords: Dracaena cochinchinensis, flavonoid oligomers, cochinchinenins D-H
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Contributor Information
Min Xu, Email: xumin@mail.kib.ac.cn.
Ying-Jun Zhang, Email: zhangyj@mail.kib.ac.cn.
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