2-guanidino-thiazole-5-carboxylic acid   、                                                                                      
ethyl (RS)-(piperidin-3-ylmethoxy)-acetate hydrochloride                                                                                                                                                                                                                                                                                                          以there is obtained ethyl (RS)-[1-(2-guanidino-thiazole-5-carbonyl)-piperidin-3-ylmethoxy]-acetate, m.p. 156° C., MS的产率得到ethyl (RS)-[1-(2-guanidino-thiazole-5-carbonyl)-piperidin-3-ylmethoxy]-acetate