乙酸酐   、                                                                                      
3β-methoxyserrat-14-en-21α,29-diol                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                                                                                                                            以11 mg的产率得到Acetic acid (3S,4S,4aR,7aS,9aR,11S,13aR,13bS,15aS,15bR)-4-acetoxymethyl-11-methoxy-4,7a,10,10,13a,15b-hexamethyl-2,3,4,4a,5,7,7a,8,9,9a,10,11,12,13,13a,13b,14,15,15a,15b-icosahydro-1H-cyclohepta[1,2-a;5,4-a']dinaphthalen-3-yl ester