(3aR,5S,5aS,8aS,8bR)-2,2,7,7-Tetramethyl-5-(4-methylene-3-phenylsulfanyl-tetrahydro-furan-2-yl)-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran                                                                                                                                                              在
                                                                                                                                                                                 
二苯二硫醚                                                                                                                                  作用下,
                                                                                                                                                                                                                            以73%的产率得到(3aR,5R,5aS,8aS,8bR)-2,2,7,7-Tetramethyl-5-(4-phenylsulfanylmethyl-2,5-dihydro-furan-2-yl)-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran