A new ceramide from the basidiomycete Russula cyanoxantha

A new phytosphingosine-type ceramide(1) was isolated along with nine other compounds-5 alpha ,8 alpha -epidioxy(22E,24R)-ergosta-6,22-dien-3 beta -ol, 5 alpha ,8 alpha -epidioxy-(24S)-ergosta-6-en-3 beta -ol, (24S)-ergosta-7- ene-3 beta ,5 alpha ,6 beta -triol, (22E,24R)ergosta-7,22-dien-3 beta ,5 al pha ,6 beta -triol, inosine, adenine, L-pyroglutamic acid, fumaric acid, an d D-allitol from the ethanol and chloroform/methanol extract of the fruitin g bodies of the basidiomycete Russula cyanoxanotha (Schaeff.) Pr. The struc ture of (1) was established as (2S,3S,4R,2'R)-2-(2'-hydroxytetracosanoylami no) octadecane-1,3,4-triol by means of spectroscopic and chemical methods.