[(1S,4R,5R,6R,7S,8R,11R,13S,17S,18S,19R)-4-[tert-butyl(dimethyl)silyl]oxy-5-hydroxy-6,14,18-trimethyl-9,16-dioxo-17-trimethylsilyloxy-3,10-dioxapentacyclo[9.8.0.01,7.04,19.013,18]nonadec-14-en-8-yl] 3-methylbutanoate 生成
[(1S,4S,5R,6R,7S,8R,11R,13S,17S,18S,19R)-4,5,17-trihydroxy-6,14,18-trimethyl-9,16-dioxo-3,10-dioxapentacyclo[9.8.0.01,7.04,19.013,18]nonadec-14-en-8-yl] 3-methylbutanoate