1: NaH / dimethylsulfoxide; benzene / 5 h / 20 °C 2: BH3*THF / tetrahydrofuran / 0.5 h / 20 °C 3: 137 mg / H2O2; NaOH / tetrahydrofuran; H2O / Heating 4: 63 percent / pyridinium chlorochromate; NaOAc; 3A MS / CH2Cl2 / 2 h / 20 °C View Scheme

1: AgCl / methanol / 1 h / Ambient temperature 2: 1.4 percent / H2O / 192 h / 24 °C / incorporation experiment on Macleaya cordata in Murashige and Skoog's medium View Scheme