| —— | (R)-({2-[1-(3,3-dimethyl-1,4-dioxaspiro[4.4]nonan-2-yl)vinyl]phenyl}(methoxycarbonyl)amino)acetic acid | 1416570-23-4 | C21H27NO6 | 389.448 | 
                                                                                                                                            
                                        | —— | methyl (R)-2-({2-[1-(3,3-dimethyl-1,4-dioxaspiro[4.4]nonan-2-yl)vinyl]phenyl}(methoxycarbonyl)amino)acetate | 1416570-59-6 | C22H29NO6 | 403.475 | 
                                                                                                                                            
                                        | —— | methyl (2aS,7bS)-7b-((R)-3,3-dimethyl-1,4-dioxaspiro[4.4]nonan-2-yl)-2-oxo-2,2a-dihydro-1H-cyclobuta[b]indole-3(7bH)-carboxylate | 1416570-22-3 | C21H25NO5 | 371.433 | 
                                                                                                                                            
                                        | —— | 3a-((R)-3,3-dimethyl-1,4-dioxaspiro[4.4]nonan-2-yl)-1-methyl-2-oxo-1,2,3,3a-tetrahydropyrrolo[2,3-b]indole-8(8aH)-carboxylate | 1416570-24-5 | C22H28N2O5 | 400.475 |