(8β,20R)-8-[(tert-butyldimethylsilyl)oxy]-des-A,B-17α,21-cyclocholest-22-yn-25-ol

(8β,20R)-8-[(tert-butyldimethylsilyl)oxy]-25-[(methoxymethyl)oxy]-des-A,B-17α,21-cyclocholest-22-yne

(8β,20R)-25-[(methoxymethyl)oxy]-des-A,B-17α,21-cyclocholest-22-yn-8-one

(1S,3R,5Z,7E,20R)-1,3-di-[(tert-butyldimethylsilyl)oxy]-25-[(methoxymethyl)oxy]-17α,21-cyclo-9,10-secocholesta-5,7,10(19)-trien-22-yne