2,2-dimethyl-5-pentyl-3-thiazoline   、                                                                                      
Isothiocyanato-acetic acid 2,6-di-tert-butyl-4-methyl-phenyl ester                                                                                                                                                              在
                                                                                                                                                                                 
三氟化硼乙醚   、                                                                                                  
lithium diisopropyl amide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 (2,6-ditert-butyl-4-methylphenyl) (1S,7S,7aS)-3,3-dimethyl-1-pentyl-5-sulfanylidene-1,6,7,7a-tetrahydroimidazo[1,5-c][1,3]thiazole-7-carboxylate   、                                                                                             
(2,6-ditert-butyl-4-methylphenyl) (1S,7R,7aS)-3,3-dimethyl-1-pentyl-5-sulfanylidene-1,6,7,7a-tetrahydroimidazo[1,5-c][1,3]thiazole-7-carboxylate