| —— | 
                                        rac-diethyl ((R,E)-3-((3aS,4R,6aR)-4-((4-methoxybenzyl)oxy)-5,5-dimethyltetrahydro-1H-spiro[pentalene-2,2'-[1,3]dioxolan]-6a(3H)-yl)but-1-en-1-yl)phosphonate | 
                                        135760-90-6 | 
                                        C28H43O7P | 
                                        522.619 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (1R,3aR,5aS,6R,8aR)-6-(4-Methoxy-benzyloxy)-1,7,7-trimethyl-octahydro-cyclopenta[c]pentalen-4-one | 
                                        135760-92-8 | 
                                        C22H30O3 | 
                                        342.478 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        rac-(R)-3-((3aS,4R,6aR)-4-((4-methoxybenzyl)oxy)-5,5-dimethyltetrahydro-1H-spiro[pentalene-2,2'-[1,3]dioxolan]-6a(3H)-yl)butanal | 
                                        135760-91-7 | 
                                        C24H34O5 | 
                                        402.531 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        rac-diethyl ((3R)-1-hydroxy-3-((3aS,4R,6aR)-4-((4-methoxybenzyl)oxy)-5,5-dimethyltetrahydro-1H-spiro[pentalene-2,2'-[1,3]dioxolan]-6a(3H)-yl)butyl)phosphonate | 
                                        135761-02-3 | 
                                        C28H45O8P | 
                                        540.634 |