2-methylspiro[furo[2,3-f][1,3]benzothiazole-7,3'-indol]-2'(1'H)-one   、                                                                                      3-methylspiro[furo[3,2-f][1,2]benzisoxazole-5,3'-indol]-2'(1H)-one   、                                                                                      
2-(溴甲基)吡啶氢溴酸盐   、                                                                                      
2-溴甲基-5-三氟甲基呋喃                                                                                                                                                                                                                                                                                                          以2-methyl-1′-(pyridin-2-ylmethyl)spiro[furo[2,3-f][1,3]benzothiazole-7,3′-indol]-2′(1′H)-one was obtained (38%) as a colorless solid的产率得到2-methyl-1'-(pyridin-2-ylmethyl)spiro[furo[2,3-f][1,3]benzothiazole-7,3'-indol]-2'(1'H)-one