This invention refers to 17alpha ,22 - dihydroxy
Furan Steride compounds and its application. The compound' s structure formula is drawing in right graph, wherein the R1, R2 and R3 = H, C1-10 direct chain, cyclane group or alkenyl , triethylsilyl, dimethyl- tert-butylsilyl-
biphenyl-tert-butylsilyl, methoxymethyl or tetrahydropyranyl. R4 = H see right formula a, b, C1-10 direct chain, cyclane group, alkenyl or alkynyl , R5 = C1-10 direct chain or cyclane group, R6 = H, C1-10 direct chain or cyclane group or alkenyl, triethylsilyl, dimethyl- tert-butylsilyl,
biphenyl-tert-butylsilyl, methoxymethyl, tetrahydropyranyl. The start materials is
diosgenin, which is easy available and cheap. Through F-cyclic degrading, the degradation product' s structure is converted into 17alpha,22 - dihydroxy
furan steride compound. The compound again with F-cyclic restructure becomes the
sapogenin, which is medicinal value. The process thereof is simple, adapted for industrialized production. It's
glycoside of
medicinal herbs Chonglou (Paris petiolata bak)
sapogenin as one
active ingredient, whose synthesis is provided herewith is effectively.