| —— | 
                                        (1S,2R,4S,5R,7R)-7-<(1R,3RS)-3-(t-Butyldimethylsiloxy)-4-<(1S,2S,4S)-2-(1-ethoxyethoxy)-3,3-dimethyl-7-oxabicyclo<2.2.1>heptan-1-yl>-1-hydroxybutyl>-4-(1-ethoxyethoxy)-1,2,7-trimethylbicyclo<3.2.1>octan-6-one | 
                                        123427-56-5 | 
                                        C37H68O8Si | 
                                        669.028 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (1S,2R,4S,5R,7R)-7-<(1R,3RS)-3-(t-Butyldimethylsiloxy)-1-(diethoxyphosphonylacetoxy)-4-<(1S,2S,4S)-2-(1-ethoxyethoxy)-3,3-dimethyl-7-oxabicyclo<2.2.1>heptan-1-yl>butyl>-4-(1-ethoxyethoxy)-1,2,7-trimethylbicyclo<3.2.1>octan-6-one | 
                                        123427-57-6 | 
                                        C43H79O12PSi | 
                                        847.152 |