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From the gun resin Ammoniacum, an epimeric mixture 2a/3a of highly functionalized prenylated chromandiones was isolated. Their structure was established by spectral data and single‐crystal X‐ray analysis. The compounds were isolated as acetates 2b/3b, and these derivatives showed in vivo haemorrhagic activity.
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Appendino et al. (1991) studied this question.
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