Antiplatelet aggregation principles from Glycosmis citrifolia

Yann Lii Leu, Yu Yi Chan, Tian Shung Wu*, Che Ming Teng, Kuo Tung Chen

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

6 Scopus citations


Twelve acridone alkaloids, citracridone-I (1), atalaphyllidine (2), noracronycine (3), des-N-methyl-noracronycine (4), 5-hydroxynor-acronycine (5), des-N-methylacronycine (6), N-methyl severifoline (7), 5-hydroxy-N- methyl severifoline (8), glycocitrine-II (9), 3-O-methyl-glycocitrine-II (10), glycocitrine-I (11) and pyranofoline (12); one 2-quinolone alkaloid, 4,8-dimethoxy-1-methyl-3(3-methylbut-2-enyl)2-quinolone (13) were isolated and characterized from the stem and root barks of Glycosmis citrifolia. Their structures were determined by spectral analyses. On bioactive evaluation, compounds 1 and 2 almost completely inhibited platelet aggregation induced by arachidonic acid (100 μM), collagen (10 μg/mL) and PAF (2 ng/mL). Compounds 2, 4 and 13 also showed an inhibitory effect on AA and collagen-induced rabbit platelet aggregation. In the structure and activity relationship of acridone alkaloids, the acridone nucleus bearing a pyranyl moiety is a most important factor for the antiplatelet aggregation activity.

Original languageEnglish
Pages (from-to)S77-S79
JournalPhytotherapy Research
Issue numberSUPPL. 1
StatePublished - 1998
Externally publishedYes


  • 2-quinolone
  • Acridone
  • Alkaloids
  • Antiplatelet aggregation
  • Glycosmis citrifolia


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