{[(4aS,13aR)-8-({[(2,4-difluorophenyl)methyl]amino}carbonyl)-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1',2':3,4]imidazo[1,2-d]pyrazin-10-yl]oxy}methyl 2-(methyloxy)ethyl carbonate 、 methyl ({[({[(4aS,13aR)-8-({[(2,4-difluorophenyl)methyl]amino}carbonyl)-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1',2':3,4]imidazo[1,2-d]pyrazin-10-yl]oxy}methyl)oxy]carbonyl}oxy)acetate 、 {[(4aS,13aR)-8-({[(2,4-Difluorophenyl)methyl]amino}carbonyl)-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1',2':3,4]imidazo[1,2-d]pyrazin-10-yl]oxy}methyl 2-(4-morpholinyl)ethyl carbonate 、
{[(4aS,13aR)-8-({[(2,4-difluorophenyl)methyl]amino}carbonyl)-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1',2':3,4]imidazo[1,2-d]pyrazin-10-yl]oxy}methyl 2-hydroxyethyl carbonate 、 {[(4aS,13aR)-8-({[(2,4-Difluorophenyl)methyl]amino}carbonyl)-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1',2':3,4]imidazo[1,2-d]pyrazin-10-yl]oxy}methyl 2-(phosphonooxy)ethyl carbonate 、
{[(4aS,13aR)-8-({[(2,4-difluorophenyl)methyl]amino}carbonyl)-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1',2':3,4]imidazo[1,2-d]pyrazin-10-yl]oxy}methyl 3-hydroxypropyl carbonate 、 {[(4aS,13aR)-8-({[(2,4-difluorophenyl)methyl]amino}carbonyl)-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1',2':3,4]imidazo[1,2-d]pyrazin-10-yl]oxy}methyl 3-(phosphonooxy)propyl carbonate 生成
{[(4aS,13aR)-8-({[(2,4-difluorophenyl)methyl]amino}carbonyl)-9,11-dioxo-2,3,4a,5,9,11,13,13a-octahydro-1H-pyrido[1,2-a]pyrrolo[1',2':3,4]imidazo[1,2-d]pyrazin-10-yl]oxy}methyl methyl carbonate