(1S,2R,5S,12S,13S,16R,17R)-10-[[(3S,8S,9R,10R,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl]oxy]-2,17-dimethyl-16-[(2R)-6-methylheptan-2-yl]-8,9-dioxatetracyclo[10.7.0.02,7.013,17]nonadecane-5,7-diol 、
p-bromobenzoyl trifluoromethanesulfonate 生成 [(1S,2R,5S,12S,13S,16R,17R)-10-[[(3S,8S,9R,10R,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl]oxy]-7-hydroxy-2,17-dimethyl-16-[(2R)-6-methylheptan-2-yl]-8,9-dioxatetracyclo[10.7.0.02,7.013,17]nonadecan-5-yl] 4-bromobenzoate