1: 1.45 g / NaBH4 / methanol / 1 h / Ambient temperature 2: 180 mg / acetone / 6 h / 80 °C 3: AgCl / methanol / 1 h / Ambient temperature 4: 6.2 percent / H2O / 192 h / 24 °C / incorporation experiment on Macleaya cordata in Murashige and Skoog's medium View Scheme