3-溴丙烯 、
(3R,5R,6S,8S)-12-methoxy-6,10-dimethyl-8-(2-methylprop-1-enyl)-3-phenyl-3lambda6-thia-2-azatricyclo[7.3.1.05,13]trideca-1(12),2,9(13),10-tetraene 3-oxide 在
lithium hexamethyldisilazane 作用下,
以
四氢呋喃 为溶剂,
反应 1.0h,
以100%的产率得到(2R,3S,3aR,4S,6S)-3-allyl-9-methoxy-4,7-dimethyl-6-(2-methylprop-1-en-1-yl)-2-phenyl-3a,4,5,6-tetrahydro-3H-naphtho[1,8-cd][1,2]thiazine 2-oxide