[EN] META SUBSTITUTED PHENYLPYRAZOLO- AND PHENYLPYRROLO- PYRIDAZINE DERIVATIVES HAVING MULTIMODAL ACTIVITY AGAINST PAIN [FR] DÉRIVÉS DE PHÉNYLPYRAZOLO- ET PHÉNYLPYRROLO-PYRIDAZINE MÉTA-SUBSTITUÉS AYANT UNE ACTIVITÉ MULTIMODALE CONTRE LA DOULEUR
Synthesis of dihydro-2H-spiro [acenaphthylene-1,3′-pyrazole]: An approach toward apixaban moeity
作者:V. Nookaappa Rao Gorli、Rajagopal Srinivasan
DOI:10.1080/00397911.2021.2023574
日期:2022.1.17
Abstract The 1,3-dipolar cycloaddition (DC) reaction of substituted acenaphthenone-2-ylidine ketone with nitrile imines to obtain the corresponding dihydro-2H-spiro [acenaphthylene-1,3′-pyrazole] cycloadducts in good to excellent yields (up to 92%) with regioselectivity. Nitrile imines were generated from hydrazonoyl chlorides in the presence of triethylamine as a base in dichloromethane solvent. The
Cycloaddition of nitrile imines to resin-bound enamines: a solid phase synthesis of 1,4-diarylpyrazoles
作者:Andrew C. Donohue、Sue Pallich、Tom D. McCarthy
DOI:10.1039/b102913b
日期:2001.11.1
The 1,3-dipolar cycloaddition reaction between nitrile imines and resin-bound enamines gives resin-bound pyrazoline intermediates. The piperazine resin functions as a traceless linker and allows these intermediates to be cleaved directly from the resin under mild acid conditions to afford 1,4-diarylpyrazoles. Alternatively they may be chemically modified on the resin prior to elimination from the polymer. The cycloaddition–elimination sequence is regiospecific for the 3,4-disubstituted pyrazole isomer and the products are obtained in good to high yield and in high purity.
[EN] META SUBSTITUTED PHENYLPYRAZOLO- AND PHENYLPYRROLO- PYRIDAZINE DERIVATIVES HAVING MULTIMODAL ACTIVITY AGAINST PAIN<br/>[FR] DÉRIVÉS DE PHÉNYLPYRAZOLO- ET PHÉNYLPYRROLO-PYRIDAZINE MÉTA-SUBSTITUÉS AYANT UNE ACTIVITÉ MULTIMODALE CONTRE LA DOULEUR
申请人:ESTEVE LABOR DR
公开号:WO2018100041A1
公开(公告)日:2018-06-07
The present invention relates to meta substituted phenylpyrazolo-and phenylpyrrolo-pyridazine derivatives of formula (I) having dual pharmacological activity towards both the a28 subunit, in particular the a28-l subunit, of the voltage-gated calcium channel and the NET receptor, to processes of preparation of such compounds, to pharmaceutical compositions comprising them, and to their use in therapy, in particular for the treatment of pain.