1: H2 / Pd/C 2: Dowex 50W-X8 (H+ form) / acetone 3: Et3N 4: NaCNBH3, HCl 5: NaOMe / methanol 6: N-phenylsulfonyl-3-phenyloxaziridine, KN(SiMe3)2 / toluene / -90 °C 7: Me2SO 8: i-Pr2NEt 9: methanol / 55 °C 10: H2 / Pt 11: K2CO3 12: H2 / Pd(OH)2 View Scheme

1: H2 / Pd/C 2: Dowex 50W-X8 (H+ form) / acetone 3: Et3N 4: NaCNBH3, HCl 5: NaOMe / methanol 6: N-phenylsulfonyl-3-phenyloxaziridine, KN(SiMe3)2 / toluene / -90 °C 7: Me2SO 8: i-Pr2NEt View Scheme

lithium aluminium tetrahydride in diethyl ether 1 h; Ambient temperature; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

hydrogenchloride in methanol; palladium on charcoal; water; ethyl acetate