1: boron trifluoride diethyl etherate / dichloromethane / 0 - 20 °C / |Inert atmosphere 2: methanol; sodium methylate / 20 °C / pH 10 - 11 3: sodium hydroxide; Thermus nonproteolyticus HG102 E338A mutant; glycine / aq. buffer / 48 h / 45 °C / pH 8.8 / |Enzymatic reaction 4: sodium hydroxide; Thermus nonproteolyticus HG102 E338A mutant; glycine / aq. buffer / 48 h / 45 °C / pH 8.8 / |Enzymatic reaction View Scheme

1: sodium hydroxide; Thermus nonproteolyticus HG102 E338A mutant; glycine / aq. buffer / 48 h / 45 °C / pH 8.8 / |Enzymatic reaction 2: sodium hydroxide; Thermus nonproteolyticus HG102 E338A mutant; glycine / aq. buffer / 48 h / 45 °C / pH 8.8 / |Enzymatic reaction View Scheme

1: tetra(n-butyl)ammonium hydrogensulfate; sodium hydroxide / water; dichloromethane / 20 °C 2: methanol; sodium methylate / 20 °C / pH 10 - 11 3: sodium hydroxide; Thermus nonproteolyticus HG102 E338A mutant; glycine / aq. buffer / 48 h / 45 °C / pH 8.8 / |Enzymatic reaction View Scheme