(S)-tert-Butyl 5-azaspiro[2.4]heptan-7-ylcarbamate → 5-amino-7-((S)-7-tert-butoxycarbonylamino-5-azaspiro[2.4]hept-5-yl)-1-cyclopropyl-6-fluoro-1,4-dihydro-8-methyl-4-oxoquinoline-3-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

A mixture consisting of 5-amino-1-cyclopropyl-6,7-difluoro-1,4-dihydro-8-methyl-4-oxoquinoline-3-carboxylic acid (50 mg, 0.170 mmol), (7S)-7-tert-butoxycarbonylamino-5-azaspiro[2.4]heptane (108 mg, 0.509 mmol) and dimethyl sulfoxide (4 ml) was stirred at an outer temperature of 80° C. for 7 hours. When analysis was carried out by a high performance liquid chromatography after completion of the reaction, formed ratio of the compound of interest 5-amino-7-[(7S)-7-tert-butoxycarbonylamino-5-azaspiro[2.4]hept-5-yl]-1-cyclopropyl-6-fluoro-1,4-dihydro-8-methyl-4-oxoquinoline-3-carboxylic acid was 10%. Also, residual ratio of the starting material was 90%.

Provenance & Evidence