(3S,10R,13E,16S)-16-[(2R)-but-3-en-2-yl]-10-[(3-chloro-4-methoxyphenyl)methyl]-6,6-dimethyl-3-(2-methylpropyl)-1,4-dioxa-8,11-diazacyclohexadec-13-ene-2,5,9,12-tetrone 在
间氯过氧苯甲酸 作用下,
以21%的产率得到(E)-(3S,10R,16S)-10-(3-Chloro-4-methoxy-benzyl)-3-isobutyl-6,6-dimethyl-16-((S)-1-oxiranyl-ethyl)-1,4-dioxa-8,11-diaza-cyclohexadec-13-ene-2,5,9,12-tetraone