methyl (1S,2R,5S,8S,9S,10R,11S,12S)-12-acetyloxy-3-bromo-11-methyl-6,16-dioxo-15-oxahexacyclo[9.3.2.15,8.01,10.02,7.02,8]heptadec-13-ene-9-carboxylate 、
2,3,4,5,7,8,9,10-octahydropyrido[1,2-a][1,3]diazepine 生成 3β-Acetoxy-10α-hydroxy-16-oxo-17-norantherida-1,6(8),11-triene-7,19-dioic acid 7-(methyl ester) 19,10-lactone