(3aS,7aS)-7a-methylhexahydrospiro[indene-5,2'-[1,3]dithiolan]-1(4H)-one

(1R,3aS,7aS)-1-(1-butoxyethoxy)-7a-methyloctahydrospiro[indene-5,2'-[1,3]dithiolane]-1-carbonitrile

(1R,3aR,7aS)-1-(1-Hydroxy-ethyl)-7a-methyl-octahydro-inden-1-ol

1-((1R,3aS,7aS)-1-hydroxy-7a-methyloctahydrospiro[indene-5,2'-[1,3]dithiolan]-1-yl)ethan-1-one

(3a'S,7a'S)-7a'-methylhexahydrospiro[[1,3]dioxolane-2,5'-inden]-1'(6'H)-one