Abstract
A new series of N-hydroxyethylpyrazole (12a–f) and N-hydroxymethylpyrazole derivatives (15a–f) were designed for their estrogenic activities, having a 11.0 ± 0.5 Å distance between their two hydroxyl groups, aliphatic–OH and phenolic–OH similar to 17β-estradiol (E2) as an endogenous hormone. To synthesize the title compounds, the key intermediate 1,3-dicarbonyl derivatives (2 and 8), were treated with hydrazine hydrate to produce the pyrazole ring 5 and 9. Further hydroxyalkylation of the latter produced the title pyrazoles. The position of hydroxyethyl or hydroxymethyl substituents in the products was determined through 2D NOE NMR spectroscopy.
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This research was supported by a grant from National Elite Foundation.
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Allahyari-Devin, M., Abedi, B., Navidpour, L. et al. Synthesis of aryl-substituted or aryl-fused N-hydroxyethyl and N-hydroxymethypyrazole derivatives as potential ligands for the estrogen receptor. J IRAN CHEM SOC 10, 43–53 (2013). https://doi.org/10.1007/s13738-012-0126-z
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DOI: https://doi.org/10.1007/s13738-012-0126-z