methyl (4aS,8aR)-6-((tert-butyldimethylsilyl)oxy)-3-methoxy-4a,5,9,10-tetrahydro-8H-benzo[2,3]benzofuro[4,3-cd]azepine-11(12H)-carboxylate 在
palladium diacetate 、
对苯醌 作用下,
以
乙腈 为溶剂,
以57%的产率得到methyl (1S,12S)-9-methoxy-14-oxo-11-oxa-4-azatetracyclo[8.6.1.01,12.06,17]heptadeca-6(17),7,9,15-tetraene-4-carboxylate