(6R)-6-[((3S,4R)-3-{[(3,4-dihydro-2H-pyrano[2,3-c]pyridin-6-ylmethyl)amino]methyl}-4-hydroxy-1-piperidinyl)methyl]-3-fluoro-5,6-dihydro-8H-[1,4]oxazino[2,3,4-de]-1,5-naphthyridin-8-one 在
盐酸 作用下,
以
1,4-二氧六环 、
甲醇 为溶剂,
生成 (6R)-6-[((3S,4R)-3-{[(3,4-dihydro-2H-pyrano[2,3-c]pyridin-6-ylmethyl)amino]methyl}-4-hydroxy-1-piperidinyl)methyl]-3-fluoro-5,6-dihydro-8H-[1,4]oxazino[2,3,4-de]-1,5-naphthyridin-8-one dihydrochloride