(S)-2-[(3S,8S,9S,10R,13S,14S)-3-(tert-Butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-6-methyl-6-(tetrahydro-pyran-2-yloxy)-hept-4-yn-3-one                                                                                                                                                              在
                                                                                                                                                                                 B-isopinocampheyl-9-borabicyclo[3.3.1]nonane                                                                                                                                  作用下,
                                                                                                                                                                                        反应 92.0h,
                                                                                                                生成                                                 (2S,3S)-2-[(3S,8S,9S,10R,13S,14S)-3-(tert-Butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-6-methyl-6-(tetrahydro-pyran-2-yloxy)-hept-4-yn-3-ol   、                                                                                             (2S,3R)-2-[(3S,8S,9S,10R,13S,14S)-3-(tert-Butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-6-methyl-6-(tetrahydro-pyran-2-yloxy)-hept-4-yn-3-ol