methyl (3aS,3bR,4S,5R,6R,7S,7aR,8aR)-5,7a-dihydroxy-2,2,3b-trimethyl-9-oxo-6-(prop-1-en-2-yl)octahydro-3aH-4,7-(epoxymethano)indeno[1,2-d][1,3]dioxole-3a-carboxylate

(1R,5R,7S,8R)-7-Bromomethyl-5-[(R)-2-(tert-butyl-dimethyl-silanyloxy)-but-3-ynyl]-8-(tert-butyl-dimethyl-silanyloxymethyl)-4,7-dimethyl-6-oxa-bicyclo[3.2.1]oct-3-ene

methyl (3aS,3a1R,5aS,6R,7R,8S,8aR,9aR)-6,8a-dihydroxy-2,2,3a1-trimethyl-4-oxo-7-(prop-1-en-2-yl)octahydro-4H-furo[2',3',4':7,1]indeno[1,2-d][1,3]dioxole-8-carboxylate

methyl (3aS,3a1R,5aS,6R,7R,8S,8aR,9aR)-6-acetoxy-8a-hydroxy-2,2,3a1-trimethyl-4-oxo-7-(prop-1-en-2-yl)octahydro-4H-furo[2',3',4':7,1]indeno[1,2-d][1,3]dioxole-8-carboxylate

(1R,5S,8R,9S,11R)-9-(bromomethyl)-4-(chloromethyl)-5,9-dimethyl-11-(hydroxymethyl)-10-oxotricyclo<6.2.1.01.5>undec-3,6-diene