重氮甲烷 、 4-Oxo-3-((R)-1-phenyl-ethyl)-10-oxa-3-aza-tricyclo[5.2.1.0
1,5]dec-8-ene-6-carboxylic acid 生成 (1S,5R,6S,7R)-4-Oxo-3-((R)-1-phenyl-ethyl)-10-oxa-3-aza-tricyclo[5.2.1.0
1,5]dec-8-ene-6-carboxylic acid methyl ester 、
(1R,5S,6R,7S)-4-Oxo-3-((R)-1-phenyl-ethyl)-10-oxa-3-aza-tricyclo[5.2.1.01,5]dec-8-ene-6-carboxylic acid methyl ester