J Asian Nat Prod Res. 2010 Jul;12(7):586-92. |
New isoprenylated flavonoids and cytotoxic constituents from Artocarpus tonkinensis.[Pubmed: 20628938] |
METHODS AND RESULTS:
Two new isoprenylated flavonoids, artotonins A and B (1 and 2), along with 13 known compounds (3-15), were isolated from the roots of Artocarpus tonkinensis A. Chev. ex Gagnep. The structures were elucidated by spectroscopic methods.
CONCLUSIONS:
Cyclocommunol (6), isocyclomulberrin (7), cudraflavone C (11), and morusin (13) exhibited cytotoxicity against hepatocellular carcinoma (SMMC-7721) and gastric carcinoma (BGC-823 and SGC-7901) cell lines. |
Biochem Pharmacol. 1993 Jan 26;45(2):509-12. |
Antiplatelet activity of some prenylflavonoids.[Pubmed: 8435100] |
Eight naturally occurring prenylflavonoids were tested for their antiplatelet activities in rabbit platelet suspension. METHODS AND RESULTS: Cyclomorusin and artomunoxanthone showed strong inhibition of platelet-activating factor (PAF; 1-O-alkyl-2-acetyl-sn-glycero-3-phosphocholine) induced platelet aggregation. Cyclomulberrin, dihydroisocycloartomunin, Cyclocommunol and cyclocommunin showed strong inhibition of arachidonic acid (AA)- and collagen-induced platelet aggregation. Cyclomorusin also inhibited markedly collagen-induced platelet aggregation. Cyclocommunin, dihydroisocycloartomunin and cyclomulberrin also showed slight but significant antiplatelet effects on the aggregation induced by PAF.
CONCLUSIONS:
Of the compounds tested, cyclocommunin exhibited the most potent inhibition of platelet aggregation induced by collagen (IC50 = 14.4 microM) and AA (IC50 = 12.5 microM). Thromboxane B2 formation caused by AA was suppressed by cyclocommunin and artomunoxanthone. |