Patent ID: 11945882
Assignee: DAIICHI SANKYO COMPANY, LIMITED
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A  Y | IPC C

Claim 31:
32. The production method according to claim 3, wherein the compound represented by the formula (1) is produced by a production method (VI),
wherein the production method (VI) is a production method comprising the steps of:
reacting the compound represented by formula (2):, with lead tetraacetate to convert it into the compound represented by formula (3):, then
reacting the compound represented by the formula (3) with benzyl glycolate in the presence of an acid or a base to convert it into the compound represented by formula (4):, then
deprotecting a protecting group for an amino group of the compound represented by the formula (4) to convert it into the compound represented by formula (5):, then
condensing the compound represented by the formula (5) with the compound represented by formula (12):, to convert it into the compound represented by formula (13):, then
deprotecting a protecting group for a carboxy group of the compound represented by the formula (13) to convert it into the compound represented by formula (14):, then
condensing the compound represented by the formula (14) with the compound represented by formula (11):, to convert it into the compound represented by formula (15):, then
deprotecting a protecting group for an amino group of the compound represented by the formula (15) to convert it into the compound represented by formula (16):, and then
condensing the compound represented by the formula (16) with the compound represented by formula (9):, to convert it into the compound represented by the formula (1):,