(2R, 3S, 22R, 23E)-22-hydroxy-2,3-isopropylidenedioxy-24-methyl-B-homo-7-oxa-5α-cholest-23-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

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