Inventor
IKARASHI FUMIYA
JP8 patents
Patents
8 patentsUS9802959B2Oct 31, 2017
Method of producing (4R,12aS)-7,9-dihalo-4-methyl-3,4,12,12a-tetrahydro-2H-pyrido[1′,2′:4,5]pyrazino[2,1-b][1,3]oxazine-6,8-diones
SHIONOGI & CO3 citations70
US10125147B2Nov 13, 2018
Crystalline methyl (4R,12aS)-7-(benzyloxy)-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1′,2′:4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxylate
SHIONOGI & CO0 citations51
US10125146B2Nov 13, 2018
Crystalline methyl (4R,12aS)-7-(benzyloxy)-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1′,2′:4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxylate
SHIONOGI & CO0 citations51
US10000508B2Jun 19, 2018
Crystalline dimethyl 3-(benzyloxy)-1-(2,2-dimethoxyethyl)-4-oxo-1,4-dihydropyridine-2,5-dicarboxylate
SHIONOGI & CO0 citations51
US9969750B2May 15, 2018
Method of producing (3S,11aR)-6,8-dihalo-3-methyl-2,3,11,11a-tetrahydrooxazolo[3,2-a]pyrido[1,2-d]pyrazine-5,7-diones
SHIONOGI & CO0 citations51
US9650394B2May 16, 2017
Methods of producing substituted (3S,11aR)-6-hydroxy-3-methyl-5,7-dioxo-2,3,5,7,11,11a-Hexahydrooxazolo[3,2-a]pyrido[1,2-d]pyrazine-8-carboxamides
SHIONOGI & CO0 citations51
US9321789B2Apr 26, 2016
Methods of producing substituted (4R,12AS)-7-hydroxy-4-methyl-6,8-dioxo-3,4,6,8,12,12A-hexahydro-2H-pyrido[1′,2′:4,5]pyrazino[2,1-B][1,3]oxazine-9-carboxamides
SHIONOGI & CO0 citations49
US9951051B2Apr 24, 2018
Process for producing alkynylketone derivative
SHIONOGI & CO0 citations42