ethyl 1-cyclopropyl-6-nitro-4-oxo-7-(4-oxo-3,4,7,8-tetrahydro-2H-thiopyrano[3,2-c]pyridin-6(5H)-yl)-1,4-dihydroquinoline-3-carboxylate 在
铁粉 作用下,
以
溶剂黄146 为溶剂,
反应 3.0h,
以58.2%的产率得到ethyl 6-amino-1-cyclopropyl-4-oxo-7-(4-oxo-3,4,7,8-tetrahydro-2H-thiopyrano[3,2-c]pyridin-6(5H)-yl)-1,4-dihydroquinoline-3-carboxylate