(1-Chlor-aethyl)-dimethyl-chlorsilan   、                                                                                      
17α-ethynylestradiol 3,17-bis(tetrahydropyranyl ether)                                                                                                                                                              在
                                                                                                                                                                                 
正丁基锂                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 (1-Chloro-ethyl)-dimethyl-[(8R,9S,13S,14S,17S)-13-methyl-3,17-bis-(tetrahydro-pyran-2-yloxy)-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-ylethynyl]-silane