重氮甲烷 、
4-(3,15-Dihydroxy-4-methoxy-9-aza-tricyclo[10.3.1.02,7]hexadeca-1(15),2,4,6,12(16),13-hexaen-9-yl)-4-oxo-butyric acid methyl ester 以
乙醚 为溶剂,
生成 4-(15-Hydroxy-3,4-dimethoxy-9-aza-tricyclo[10.3.1.0
2,7]hexadeca-1(15),2,4,6,12(16),13-hexaen-9-yl)-4-oxo-butyric acid methyl ester