2,3,16-tri-O-2'-methoxyacetyl-hemslecin A   、                                                                                      
间氯过氧苯甲酸                                                                                                                                                                                              以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以70%的产率得到[(2S,3S,5S,6R,8S,9R,10S,13R,14S,16R,17R)-17-[(2R)-6-acetyloxy-2-hydroxy-6-methyl-3-oxoheptan-2-yl]-6-hydroxy-2,3,16-tris[(2-methoxyacetyl)oxy]-4,4,9,13,14-pentamethyl-11-oxo-2,3,6,7,8,10,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-5-yl] 3-chlorobenzoate