1: 78 percent / HCl, NaBH3CN, 3 Angstroem molecular sieves / diethyl ether; tetrahydrofuran / 0.33 h 2: pyridine / 1.) -30 -> 0 deg C, 2.) 6 h, 0 deg C 3: toluene / 48 h / Ambient temperature 4: NaOCH3/CH3OH / 24 h / Ambient temperature 5: H2 / 10percent Pd-C / methanol / 16 h / 4500.4 Torr / Ambient temperature View Scheme