Patent · US Active

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

US10125146B2 · kind B2 · utility

0Cited by

1References

1Claims

0Family size

Assignee

SHIONOGI & CO., LTD. · JP

Inventors

Yukihito Sumino · Osaka, JP
Moriyasu Masui · Yokkaichi, JP
Daisuke Yamada · Asan-si, KR
Fumiya Ikarashi · Kasai, JP
Kazuya Okamoto · Yokohama, JP

Key dates

Filing date	Sep 20, 2017
Grant date	Nov 13, 2018
Priority date	—
Expiry date	Sep 20, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07B2200/13
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A 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 of the formula (U2):

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.