(4aS,6S,7S,9aR)-6-Iodomethyl-7-(4-methoxy-benzyloxy)-octahydro-1,5-dioxa-benzocycloheptene

(4aS,7S,9aR)-7-(4-Methoxy-benzyloxy)-6-methylene-octahydro-1,5-dioxa-benzocycloheptene

(4aS,6R,7S,9aR)-6-((5S,6R)-5-Benzyloxy-6-benzyloxymethyl-5,6-dihydro-4H-pyran-2-ylmethyl)-7-(4-methoxy-benzyloxy)-octahydro-1,5-dioxa-benzocycloheptene

(4aS,6R,9aR)-6-((2S,3R,5S,6R)-5-Benzyloxy-6-benzyloxymethyl-3-triethylsilanyloxy-tetrahydro-pyran-2-ylmethyl)-hexahydro-1,5-dioxa-benzocyclohepten-7-one

(4aS,6R,7S,9aR)-6-((2S,3R,5S,6R)-5-Benzyloxy-6-benzyloxymethyl-3-triethylsilanyloxy-tetrahydro-pyran-2-ylmethyl)-octahydro-1,5-dioxa-benzocyclohepten-7-ol