Аннотация:
Methyl 4-trifluoro-2-isopropyl-4-oxobutanoate prepared by the improved procedure was cyclized with hydrazines to afford the title pyrazole derivatives. N- and O-alkylation of 4-isopropyl-1-phenyl-3-(trifluoromethyl)pyrazol-5-ol gave trifluoromethyl analogues of Propyphenazone and 5-alkoxy derivatives. 4-Isopropylpyrazoles containing O-butoxy moiety with a terminal trifluoromethyl or acyloxy group were found to demonstrate a promising analgesic activity.
Образец цитирования:
L. S. Lapshin, E. V. Shchegolkov, Ya. V. Burgart, G. A. Triandafilova, O. P. Krasnykh, K. O. Malysheva, V. I. Saloutin, “Synthesis of new analgesics based on 4-isopropyl-1-phenyl-3-(trifluoromethyl)pyrazol-5-one”, Mendeleev Commun., 33:2 (2023), 194–196