环丙磺酰氯   、                                                                                      
1,7,11-trideacetyl-pyripyropene A                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                                                                                        反应 0.5h,
                                                                                                                以5 mg的产率得到((3S,4R,4aR,6S,6aS,12bS)-3,6-dihydroxy-4,6a,12b-trimethyl-11-oxo-9-(pyridin-3-yl)-1,3,4,4a,5,6,6a,12b-octahydro-2H,11H-benzo[f]pyrano[4,3-b]chromen-4-yl)methyl cyclopropanesulfonate