(3aR,5R,7aS)-6-Bromo-2,2-dimethyl-3a,4,5,7a-tetrahydro-benzo[1,3]dioxol-5-ol

(3aR,5S,7aS)-6-bromo-3a,4,5,7a-tetrahydro-5-methoxy-2,2-dimethyl-1,3-benzodioxole

(R)-4-Hydroxy-2,3-diisopropoxy-4-((3aS,6S,7aR)-6-methoxy-2,2-dimethyl-3a,6,7,7a-tetrahydro-benzo[1,3]dioxol-5-yl)-cyclobut-2-enone

(3aR,5R,7aS)-6-iodo-2,2-dimethyl-5-[(4-nitrophenyl)carbonyloxy]-3a,4,5,7a-tetrahydro-1,3-benzodioxole

(3aR,7aS)-tetrahydro-2,2-dimethyl-6-methylenebenzo[d][1,3]dioxol-5(6H)-one