1: Zn(BH4)2 / diethyl ether 2: LiAlH4 4: acid, H2O 5: NH2OH*HCl, pyridine 6: 5percent sodium hypochlorite, Et3N 7: H2, boric acid / W-2 Raney nickel 8: MsCl, DMAP 10: 97 percent / PPTS / methanol 11: CrO3, H2SO4 12: L-selectride 13: 75 percent / Na, liq. NH3 View Scheme