重氮甲烷 、
(S)-Benzyloxycarbonylamino-((3aR,5R,6S,6aR)-6-benzyloxy-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl)-acetic acid 以
吡啶 为溶剂,
生成 (S)-Benzyloxycarbonylamino-((3aR,5R,6S,6aR)-6-benzyloxy-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl)-acetic acid methyl ester