[EN] PROCESS FOR PRODUCING BIOTIN INTERMEDIATE<br/>[FR] PROCÉDÉ DE PRODUCTION D'UN INTERMÉDIAIRE DE BIOTINE
申请人:[en]DSM IP ASSETS B.V.
公开号:WO2022257151A1
公开(公告)日:2022-12-15
Provided an improved process for producing a biotin intermediate compound (I) with low cost and high yield, Wherein: R1and R2are each independently of one another H, lower alkyl, lower cycloalkyl, aryl, or lower aralkyl, optionally substituted by one or more substituents; R3is H, or a protective group which is suitable for a nitrogen atom; and X and Y are each independently of one another O or S.