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Scheme 1.2.3. Bicyclic diazabicycloalkanes 11. Reagents and conditions: (a) cat. l<2OsO2 (OH)4, l<3Fe(CN)6, K2CO3, tert-BuOH/H2O, 12 h, rt; (b) H2 (1 atm), 5% Pd/C, EtOH, rt, 24 h;

(c) Cbz-protected amino acid, DCC, HOBT, DMF, 12 h, rt;

O CO2Et

O CO2Et

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