(2S)-3-[(2S,8S,11R)-2-[(E,2R)-4-[(2S,2'R,4R,4aS,8aR)-4-hydroxy-2-[(1S,3S)-1-hydroxy-3-[(2R,3R)-3-methyl-1,7-dioxaspiro[5.5]undecan-2-yl]butyl]-3-methylidenespiro[4a,7,8,8a-tetrahydro-4H-pyrano[3,2-b]pyran-6,5'-oxolane]-2'-yl]but-3-en-2-yl]-11-hydroxy-4-methyl-1,7-dioxaspiro[5.5]undec-4-en-8-yl]-2-hydroxy-2-methylpropanoic acid 、
2-[9-(3,4,5-三甲氧苯基)-5-硫杂-1,2,7,8-四氮杂二环[4.3.0]壬-2,6,8-三烯-3-基]乙酸 以0%的产率得到