Patent ID: 11878989
Assignee: SHANGHAI FOREFRONT PHARMA CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  Y | IPC C

Claim 11:
12. The method for preparing the L-erythro biopterin compound according to claim 1, wherein,
when the alkene in the compound represented by formula (II) is of a cis structure and its structural formula is represented by formula (IIa), the compound represented by formula (IIa) is obtained by a catalytic hydrogenation reaction of the compound represented by formula (V):, when the alkene in the compound represented by the formula (II) is of a trans structure and its structural formula is represented by formula (IIb), the compound represented by formula (IIb) is obtained by a coupling reaction of the compound represented by formula (VI);, in which M is H or a leaving group.