| —— | (3aS,3bR,6R,6aS,7aR)-6-(2-Methoxycarbonyl-cyclopent-2-enyl)-2,2-dimethyl-hexahydro-1,3-dioxa-4-aza-cyclopenta[a]pentalene-4-carboxylic acid benzyl ester | 359436-47-8 | C25H31NO6 | 441.524 | 
                                                                                                                                            
                                        | —— | (3aS,3bR,6S,6aS,7aR)-2,2-Dimethyl-6-(2-oxo-cyclopentyl)-hexahydro-1,3-dioxa-4-aza-cyclopenta[a]pentalene-4-carboxylic acid benzyl ester | 359436-41-2 | C23H29NO5 | 399.487 | 
                                                                                                                                            
                                        | —— | (3aS,3bR,6S,6aS,7aR)-6-(3-Methoxycarbonyl-2-oxo-cyclopentyl)-2,2-dimethyl-hexahydro-1,3-dioxa-4-aza-cyclopenta[a]pentalene-4-carboxylic acid benzyl ester | 359436-42-3 | C25H31NO7 | 457.524 | 
                                                                                                                                            
                                        | —— | (3aS,3bR,6S,6aS,7aR)-2,2-Dimethyl-6-(2-trifluoromethanesulfonyloxy-cyclopent-2-enyl)-hexahydro-1,3-dioxa-4-aza-cyclopenta[a]pentalene-4-carboxylic acid benzyl ester | 359436-46-7 | C24H28F3NO7S | 531.55 |