[(1S,2R,3S,4R)-3-(2,2-dimethylpropoxy)-4,7,7-trimethyl-2-bicyclo[2.2.1]heptanyl] carbamate 在
四氯化钛 吡啶 、
氯化亚砜 作用下,
生成 (1R,4S)-2-Oxo-2λ
4-thia-3-aza-bicyclo[2.2.2]oct-5-ene-3-carboxylic acid (1S,2R,3S,4R)-3-(2,2-dimethyl-propoxy)-4,7,7-trimethyl-bicyclo[2.2.1]hept-2-yl ester