(E)-(8S,11S,17R)-11-((1R,2R,3S)-3-Chloro-2-hydroxy-1-methyl-3-phenyl-propyl)-17-(3-chloro-4-methoxy-benzyl)-8-isobutyl-7,10-dioxa-16,19-diaza-spiro[4.15]icos-13-ene-6,9,15,18-tetraone 在
potassium carbonate 作用下,
以
乙腈 为溶剂,
生成 (E)-(8S,11S,17R)-17-(3-Chloro-4-methoxy-benzyl)-8-isobutyl-11-[(S)-1-((2R,3R)-3-phenyl-oxiranyl)-ethyl]-7,10-dioxa-16,19-diaza-spiro[4.15]icos-13-ene-6,9,15,18-tetraone