anhydride of 6-methoxy-6,7-dihydro-5H-1,4-dithiepine-2,3-dicarboxylic acid 、
3-(3-diethylaminopropyl)-1-isopropylcarbodiimide 、
2-甲氧基-7-氨基-1,8-二氮杂萘 生成
6-hydroxy-3-methoxy-7-(7-methoxy-1,8-naphthyridin-2-yl)-8-oxo-3,4,7,8-tetrahydro-2H,6H-1,4-dithiepino[2,3-c]pyrrole