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

Claim 12:
13. The method for preparing the L-erythro biopterin compound according to claim 12, wherein the steps of the catalytic hydrogenation reaction are as follows:
mix the compound represented by formula (V), catalyst and solvent, and react under hydrogen atmosphere; after the reaction is completed, filter and concentrate to obtain the compound represented by formula (IIa);
the catalyst is selected from one or more of the following reagents: Lindlar catalyst, palladium/carbon, Raney nickel, platinum black and platinum dioxide;
the solvent is selected from one or more of the following reagents: tetrahydrofuran, 2-methyltetrahydrofuran, ethyl ether, methyl tert-butyl ether, methyl cyclopentyl ether, methanol, ethanol, isopropanol, acetonitrile and toluene.