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  • Title: Sesquiterpenoids from Pulicaria canariensis and their cytotoxic activities.
    Author: Triana J, López M, Pérez FJ, González-Platas J, Quintana J, Estévez F, León F, Bermejo J.
    Journal: J Nat Prod; 2005 Apr; 68(4):523-31. PubMed ID: 15844941.
    Abstract:
    Thirteen new sesquiterpenes, pulicanadiene A (1), B (2), and C (3), pulicanone (4), pulicanol (5), pulicanarals A (6), B (7), and C (8), pulicanadienals A (9) and B (10), pulicanadienol (11), and pulioplopanones A (12) and B (13), and seven known compounds, stigmasterol, ergosterol peroxide, calenduladiol, 7,4'-di-O-methyldihydrokaempferol, 5,7-dihydroxy-3,3',4'-trimethoxyflavone, dihydroquercetin 7,3'-dimethyl ether, and 6,15alpha-epoxy-1beta,4beta-dihydroxyeudesmane, were isolated from Pulicaria canariensis. Compound 4a showed cytotoxicity on the human myeloid leukemia cell line HL-60. The cytotoxicity was caused by induction of apoptosis as determined by microscopy of nuclear changes, activation of caspases, and the cleavage of poly(ADP-ribose) polymerase-1.
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