| —— | N-(O-t-butyl-(S)-α-aspartyl)-2(RS)-{2-[N-(N,N'-di-t-butoxycarbonylamidino)-4-piperidyloxy]ethyl}piperidine | 190846-36-7 | C31H55N5O8 | 625.806 | 
                                                                                                                                            
                                        | —— | N-[(R)-phenylalanyl]-2(RS)-{2-[N-(N,N'-di-t-butoxycarbonylamidino)-4-piperidyloxy]ethyl}piperidine | 441771-92-2 | C32H51N5O6 | 601.787 | 
                                                                                                                                            
                                        | —— | N-(N-(4-tetrahydropyranyl)-O-t-butyl-(S)-α-aspartyl)-2(RS)-{2-[N-(N,N'-di-t-butoxycarbonylamidino)-4-piperidyloxy]ethyl}piperidine | 190846-43-6 | C36H63N5O9 | 709.924 | 
                                                                                                                                            
                                        | —— | N-(N-cyclohexyl-O-t-butyl-(S)-α-aspartyl)-2(RS)-{2-[N-(N,N'-di-t-butoxycarbonylamidino)-4-piperidyloxy]ethyl}piperidine | 190846-42-5 | C37H65N5O8 | 707.952 | 
                                                                                                                                            
                                        | —— | N-(N-cyclopentyl-O-t-butyl-(S)-α-aspartyl)-2(RS)-{2-[N-(N,N'-di-t-butoxycarbonylamidino)-4-piperidyloxy]ethyl}piperidine | 190846-49-2 | C36H63N5O8 | 693.925 | 
                                                                                                                                            
                                        | —— | N-(N-cyclooctyl-O-t-butyl-(S)-α-aspartyl)-2(RS)-{2-[N-(N,N'-di-t-butoxycarbonylamidino)-4-piperidyloxy]ethyl}piperidine | 190846-50-5 | C39H69N5O8 | 736.006 | 
                                                                                                                                            
                                        | —— | N-(N-cyclohexylmethyl-O-t-butyl-(S)-α-aspartyl)-2(RS)-{2-[N-(N,N'-di-t-butoxycarbonylamidino)-4-piperidyloxy]ethyl}piperidine | 190846-53-8 | C38H67N5O8 | 721.979 | 
                                                                                                                                            
                                        | —— | N-(N-(N-methyl-4-piperidyl)-O-t-butyl-(S)-α-aspartyl)-2(RS)-{2-[N-(N,N'-di-t-butoxycarbonylamidino)-4-piperidyloxy]ethyl}piperidine | 190846-37-8 | C37H66N6O8 | 722.966 | 
                                                                                                                                            
                                        | —— | N-(N-cyclohexyl-N-ethyl-O-t-butyl-(S)-α-aspartyl)-2(RS)-{2-[N-(N,N'-di-t-butoxycarbonylamidino)-4-piperidyloxy]ethyl}piperidine | 190846-63-0 | C39H69N5O8 | 736.006 | 
                                                                                                                                            
                                        | —— | N-(N-cyclohexyl-N-ethyl-O-t-butyl-(S)-α-aspartyl)-2(RS)-{2-[N-(N,N'-di-t-butoxycarbonylamidino)-4-piperidyloxy]ethyl}piperidine | 441772-01-6 | C41H74N6O8 | 779.074 |