| —— | 
                                        (R)-3-{[5-hydroxy-2-oxo-3-phenyl-1-(1-phenyl-ethyl)-8-pyridin-3-yl-1,2-dihydro-[1,7]naphthyridine-6-carbonyl]-amino}-propionic acid | 
                                        1392843-42-3 | 
                                        C31H26N4O5 | 
                                        534.571 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (R)-5-hydroxy-2-oxo-3-phenyl-1-(1-phenyl-ethyl)-8-pyridin-3-yl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester | 
                                        1392840-60-6 | 
                                        C29H23N3O4 | 
                                        477.519 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (R)-4-{[5-hydroxy-2-oxo-3-phenyl-1-(1-phenyl-ethyl)-1,2-dihydro-[1,7]naphthyridine-6-carbonyl]-amino}-butyric acid | 
                                        1392843-36-5 | 
                                        C27H25N3O5 | 
                                        471.513 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (R)-3-{[5-hydroxy-2-oxo-3-phenyl-1-(1-phenyl-ethyl)-1,2-dihydro-[1,7]naphthyridine-6-carbonyl]-amino}-propionic acid | 
                                        1392843-35-4 | 
                                        C26H23N3O5 | 
                                        457.486 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (R)-5-hydroxy-2-oxo-3-phenyl-1-(1-phenyl-ethyl)-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester | 
                                        1392840-48-0 | 
                                        C24H20N2O4 | 
                                        400.434 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (R)-3-bromo-5-hydroxy-2-oxo-1-(1-phenyl-ethyl)-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester | 
                                        1392840-47-9 | 
                                        C18H15BrN2O4 | 
                                        403.232 |