Reaction Steps
The solution of benzyl 3-[(5aS,12R,14aS)-5,14-dioxo-2,3,5a,6,11,12,14,14a-octahydro-1H,5H-pyrrolo[1″,2″:4′,5′]pyrazino[2′,1′:6,1]pyrido[3,4-b]indol-12-yl]propylcarbamate (0.1 mmol) in methanol (2.0 ml) was stirred under hydrogen (1.5 atm) in the presence of 5% Palladium on carbon for 1 hour. The solid was removed by filtration, and the solution was evaporated to afford (5aS,12R,14aS)-12-(3-aminopropyl)-1,2,3,5a,6,11,12,14a-octahydro-5H,14H-pyrrolo[1″,2″:4′,5′]pyrazino[2′,1′:6,1]pyrido[3,4-b]indole-5,14-dione (95%). The (5aS,12S,14aS)-12-(3-aminopropyl)-1,2,3,5a,6,11,12,14a-octahydro-5H,14H-pyrrolo[1″,2″:4′,5′]pyrazino[2′,1′:6,1]pyrido[3,4-b]indole-5,14-dione was prepared in a similar manner, but using 3-[(5aS,12S,14aS)-5,14-dioxo-2,3,5a,6,11,12,14,14a-octahydro-1H,5H-pyrrolo[1″,2″:4′,5′]pyrazino[2′,1′,6,1]pyrido[3,4-b]indol-12-yl]propylcarbamate as starting material. ESIMS (MH+): 29a, 353.2; 29b, 353.2.
