(1S,4R,5R,21R,22R,24R,27R,28S,31R,32S)-5,27,31-trimethyl-10,17,20-trioxaheptacyclo[19.10.2.212,15.04,31.022,24.022,27.028,32]pentatriaconta-12(35),13,15(34)-triene-11,16-dione 在
水 、
对甲苯磺酸 作用下,
以
1,4-二氧六环 为溶剂,
反应 18.0h,
以71%的产率得到1-O-[(5R)-5-[(3S,8S,9S,10R,13R,14S,17R)-3-hydroxy-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]hexyl] 4-O-(2-hydroxyethyl) benzene-1,4-dicarboxylate