tert-butyl (1S,4R,5S,9S,12R)-12-hydroxy-8-(4-methylphenyl)sulfonyl-4-(2-methylprop-2-enyl)-10-oxa-2,8-diazatricyclo[7.3.0.01,5]dodecane-2-carboxylate 在
sodium hexamethyldisilazane 作用下,
以
四氢呋喃 为溶剂,
以90%的产率得到(3R,4S,8S,11R,14S)-7-(4-methylphenyl)sulfonyl-3-(2-methylprop-2-enyl)-9,12-dioxa-1,7-diazatetracyclo[6.5.1.04,14.011,14]tetradecan-13-one