(1S,2R,4R,5R,9S,10R,13R,14R,15R,19S)-13-Ethyl-4,14-dihydroxy-2,4,10,14,19,20-hexamethyl-7,17-diphenyl-6,8,12,16,18-pentaoxa-tricyclo[13.3.1.1
5,9]icosan-11-one 在
sodium hydroxide 、
乙醇 作用下,
以
叔丁醇 为溶剂,
生成
(R)-2-((4S,6R)-6-{(1R,3R)-3-[(4S,5S,6R)-6-((2R,3S)-3-Ethyl-2-methyl-oxiranyl)-5-methyl-2-phenyl-[1,3]dioxan-4-yl]-1-hydroxy-1-methyl-butyl}-5-methyl-2-phenyl-[1,3]dioxan-4-yl)-propionic acid 、
(R)-2-((4S,6R)-6-{(1R,3R)-3-[(4S,5S,6R)-6-((1R,2R)-1,2-Dihydroxy-1-methyl-butyl)-5-methyl-2-phenyl-[1,3]dioxan-4-yl]-1-hydroxy-1-methyl-butyl}-5-methyl-2-phenyl-[1,3]dioxan-4-yl)-propionic acid