Eriofertopin and 2-O-acetyleriofertopin, new tumor inhibitory germacradienolides from Eriophyllum confertiflorum

New Natural Products Under Development at the National Cancer Institute

“…15), a sesquiterpene lactone, has been isolated from EriophyUum confertiflorum which is found in California [18]. 15), a sesquiterpene lactone, has been isolated from EriophyUum confertiflorum which is found in California [18].…”

Structure-Activity Relationships among In Vivo Active Germacranolides

“…Eriofertopin (V) and 2-0-acet~leriofertopin (VI) were isolated from Eriophyllum confertiflorurn Gray (Asteraceae)3, and eriofertopin diacetate (VII) was prepared from eriofertopin as described previously (10). Eriofertin (11).…”