5 risultati
Trametenolic acid B (TAB) is the main active composition of Trametes lactinea (Berk.) Pat which possesses antitumor activities. There was no report its antitumor effect through regulating P-glycoprotein (P-gp) so far, due toP-gp over expression is one of the most important mechanisms contributing to
BACKGROUND
In Eastern Europe, especially Russia, the fruiting body of Inonotus obliquus has been used as a folk medicine for cancer since the sixteenth or seventeenth century. Inotodiol and trametenolic acid are considered to be the main bioactive compounds of the fruiting body of the mushroom.
Two new lanostane-type triterpenoids, inonotsuoxides A (1) and B (2) along with three known lanostane-type triterpenoids, inotodiol (3), trametenolic acid (4), and lanosterol (5), were isolated from the sclerotia of Inonotus obliquus (Pers.: Fr.) (Japanese name: Kabanoanakake) (Russian name: Chaga).
BACKGROUND
Inonotus obliquus is a medicinal mushroom that has been used as an effective agent to treat various diseases such as diabetes, tuberculosis and cancer. In order to elucidate the active fraction and its constituents, the effects of ethyl acetate fraction from I. obliquus (EAFI) on
Seven lanostane-type triterpenes including fomitopsin C(1),3-keto-dehydrosulfurenic acid(2),dehydroeburiconic acid(3),3-acetyloxylanosta-8, 24-dien-21-oic acid(4),pinicolic acid A(5),trametenolic acid B(6),and eburicoic acid(7),were isolated from the fruitbodies of Fomitopsis pinicola and F.