Patent ID: 11905243
Assignee: ACONDICIONAMIENTO TARRASENSE
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  A | IPC C

Claim 8:
9. A process for the preparation of a compound of formula (I) wherein R1 is hydrogen (Ia) said process comprising:, a) treating a compound of formula (IV), with a compound of formula (Va) or a compound of formula (Vb), in order to obtain a compound of formula (VI), and
b) de-protecting the compound of formula (VI) obtained according to step a);
wherein R1, R2 and R2′ have the same meaning as indicated in claim 1, X represents a leaving group, Y represents R1 or P1, wherein P1 is a suitable protecting group, and P2 represents a suitable protecting group for the amino function.