(3R,5R,7aS)-5-((acetylthio)methyl)-2,2-dimethyltetrahydro-2H-thiazolo[4,3-b]thiazole-3-carboxylic acid                                                                                                                                                              在
                                                                                                                                                                                 TentaGel resin supported thioglycolic acid                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇   、                                                                                         aq. phosphate buffer                                                                                  为溶剂,
                                                                                                                                                    反应 24.0h,
                                                                                                                以92%的产率得到(2R,5S,8R)-8-carboxyl-7-dimethyl-2-mercaptomethyl-1-aza-3,6-dithiobicyle[3.3.0]octane