Тетрациклические тритерпены чаги, Inonotus obliquus (Pers.) PiL., произрастающей в России

Chemical investigation of Inonotus obliquus (Chaga) growing in Russia has been performed. Lanosterol, inotodiol, and ergosterol were isolated from nonphenolic fraction. In addition, trametenolic acid was isolated from fraction III preparated by extraction from diethyl ether solution with 5% sodium hydroxide.