(2R, 3S, 24S, 22E)-24-ethyl-2,3-isopropylidenedioxy-6-trimethylsilyloxy-5α-cholesta-6,22-diene

(2R,3S,20S)-2,3-diacetoxy-20-acetoxymethyl-B-homo-7-oxa-5α-pregnan-6-one

(2R, 3S, 24S, 22E)-24-ethyl-2,3-isopropylidenedioxy-7-oxa-B-homo-5α-cholest-22-en-6-one

(2R, 3S, 6S, 7S, 24S, 22E)-6,7-epoxy-24-ethyl-7-hydroxy-2,3-isopropylidenedioxy-6-trimethylsilyloxy-5α-cholest-22-ene