HCID 474729, compound → HCID 482693, compound

Participants

Reaction Steps

1-Ethyl-6-fluoro-7-{4-[2-methoxyimino-2-(4-methoxyphenyl)ethyl]-1-piperazinyl}-4-oxo-1,4-dihydroquinoline-3-carboxylic acid was prepared from 1-ethyl-6-fluoro-7-{4-[2-(4-methoxyphenyl)-2-oxoethyl]-1-piperazinyl}-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (0.23 g, 0.5 mmol) and O-methylhydroxylamine hydrochloride (0.08 g, 1 mmol) by a method similar to that described for Example 3 (68% yield). Mp: 165° C. (dec). 1H NMR (DMSO-d6) δ 1.38 (t, 3H, J=7.0), 2.61 and 3.23 (two m, 8H), 3.69 and 3.79 (m, 6H), 3.89 (s, 2H), 4.54 (q, 2H, J=7.0), 6.93 (m, 2H), 7.13 (d, 1H, J=7.2), 7.73 (m, 2H), 7.89 (d, 1H, J=13.2), 8.90 (s, 1,H) 15.35 (br s, 1H). Anal. Calcd. for C26H29FN4O5H2O: C, 60.69; H, 6.07; N, 10.88. Found: C, 60.90; H, 5.77; N, 10.62.

Provenance & Evidence