suvanine                                                                                                                                                              在
                                                                                                                                         palladium on activated charcoal                                                                                                                                                                                                                               
氢气                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙酸乙酯                                                                                  为溶剂,
                                                                                                                                                    反应 48.0h,
                                                                                                                以99%的产率得到Sulfuric acid mono-[(1R,4aR,4bS,8aS,10aS)-4b,8,8,10a-tetramethyl-1-[2-(tetrahydro-furan-3-yl)-ethyl]-dodecahydro-phenanthren-(2E)-ylidenemethyl] ester; compound with N,N-dimethyl-guanidine