Patent ID: 11891352
Assignee: JULIUS-MAXIMILIANS-UNIVERSITAET
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 4:
5. A method for preparing a compound of general formula (I), or a salt thereof, said method comprising the following steps:
a) reacting a compound of general formula (II):, with a compound of general formula (III):, resulting in a compound of general formula (IV):, and

b) deprotecting the compound of general formula (IV) to form the compound of general formula (I) or a salt thereof, wherein, in the compounds of general formulae (I), (II), (III) and (IV):
R1-R10 and X− are as defined in claim 1;
Y is a halogen or pseudohalogen;
Y− is a halide or pseudohalide corresponding to Y; and
PG is an amino protection group selected from the group consisting of tert-butyloxycarbonyl (Voc), benzyloxycarbonyl (Cbz), fluorenylmethoxycarbonyl (Fmoc) and allyloxycarbonyl (alloc).