2-(3-methoxybenzylidene)-1H-indene-1,3(2H)-dione   、                                                                                      
6-(cyclohexylamino)-1,3-dimethyl-5-(pyridin-2-yl)furo[2,3-d]pyrimidine-2,4-dione                                                                                                                                                              在
                                                                                                                                                                                 
1,8-二氮杂双环[5.4.0]十一碳-7-烯                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                                                        以42 %的产率得到4'-(cyclohexylamino)-2'-(3-methoxyphenyl)-1'',3''-dimethyl-5'-(pyridin-2-yl)-2''H-dispiro[indene-2,3'-cyclopentane-1',5''-pyrimidin]-4'-ene-1,2'',3,4'',6''(1''H,3''H)-pentaone