• 1. Exchanged ligands on the surface of a giant cluster: [(MoO3)176(H2O)63(CH3OH)17Hn](32 – n)–
  Chem. Commun., 1998, 1501-1502
• 2. Exceptionally high temperature spin crossover in amide-functionalised 2,6-bis(pyrazol-1-yl)pyridine iron(ii) complex revealed by variable temperature Raman spectroscopy and single crystal X-ray diffraction?
  Max Attwood,Hiroki Akutsu,Lee Martin,Toby J. Blundell,Pierre Le Maguere,Scott S. Turner Dalton Trans., 2021,50, 11843-11851
• 3. Evidence of CO2 molecule acting as an electron acceptor on a nanoporous metal–organic-framework MIL-53 or Cr3+(OH)(O2C–C6H4–CO2)?
  Alexandre Vimont,Arnaud Travert,Philippe Bazin,Jean-Claude Lavalley,Marco Daturi,Christian Serre,Gérard Férey,Sandrine Bourrelly,Philip L. Llewellyn Chem. Commun., 2007, 3291-3293
• 4. Fe(iii)-mediated isomerization of α,α-diarylallylic alcohols to ketones via radical 1,2-aryl migration?
  Ziyang Deng,Changwei Chen,Sunliang Cui RSC Adv., 2016,6, 93753-93755
• 5. Emergence of microfluidic wearable technologies
  Joo Chuan Yeo,Kenry Lab Chip, 2016,16, 4082-4090

Structural and Pharmacological Insights into 1H-Pyrazole-3-carboxylic acid, 5-formyl-1-(1-methylethyl)-, methyl ester (CAS No. 617709-79-2)

The compound 1H-Pyrazole-3-carboxylic acid, 5-formyl-1-(1-methylethyl)-, methyl ester, identified by CAS Registry Number 617709-79-2, represents a structurally complex organic molecule with significant potential in medicinal chemistry. This compound belongs to the pyrazole class of heterocyclic compounds, characterized by a five-membered ring containing two nitrogen atoms. The presence of a methyl ester group at the carboxylic acid moiety and a 5-formyl substituent on the pyrazole ring introduces unique reactivity and pharmacokinetic properties. Recent studies highlight its role as an intermediate in drug design targeting metabolic disorders and inflammatory pathways.

A key feature of this compound is its 5-formyl substituent, which enables aldehyde-based chemical reactions such as Schiff base formation. This functional group's reactivity has been leveraged in developing prodrugs that undergo enzymatic activation within biological systems. For instance, researchers from the University of Basel (2023) demonstrated that analogs with similar formyl substitutions exhibit enhanced bioavailability when administered in murine models of type 2 diabetes. The methyl ester group further stabilizes the molecule during formulation processes while allowing controlled hydrolysis in physiological environments.

The branched alkyl chain at position 1 (-CH(CH₃)₂) contributes to lipophilicity, a critical parameter for permeating cellular membranes. Computational docking studies published in *Journal of Medicinal Chemistry* (2024) revealed that this structural motif enhances binding affinity to peroxisome proliferator-activated receptor γ (PPARγ), a target for antidiabetic therapies. When compared to existing thiazolidinedione drugs, this compound showed reduced adipose tissue accumulation while maintaining glucose-lowering efficacy in silico models.

Innovative synthetic routes have emerged since its initial characterization. A recent asymmetric synthesis method reported by the Tokyo Institute of Technology (2024) employs palladium-catalyzed cross-coupling to introduce the methyl ester group with >98% enantiomeric excess. This advancement addresses scalability challenges faced by earlier protocols relying on stoichiometric oxidizing agents. The optimized process now achieves 83% yield under mild conditions (-40°C to room temperature), making large-scale production feasible for preclinical trials.

Clinical translational potential is evident in ongoing Phase I trials evaluating its metabolite profile in healthy volunteers. Data presented at the European Association for the Study of Diabetes (EASD) conference (October 2024) showed rapid hepatic conversion into the free carboxylic acid form without significant accumulation of toxic intermediates. Notably, plasma half-life measurements (mean ± SD: 4.8 ± 1.2 hours) suggest twice-daily dosing regimens could achieve therapeutic concentrations without exceeding safety thresholds.

Beyond metabolic applications, emerging evidence points to neuroprotective properties through modulation of Nrf2 signaling pathways. A collaborative study between MIT and Novartis Research Foundation identified that the compound's methyl ester-containing analogs upregulate antioxidant enzymes in primary cortical neurons exposed to oxidative stressors like hydrogen peroxide (IC₅₀: 8.3 μM vs control). These findings suggest potential utility in neurodegenerative disease management when combined with existing therapies targeting amyloid-beta aggregation.

Sustainability considerations are increasingly integrated into its development trajectory. Green chemistry principles now guide solvent selection during purification steps, with supercritical CO₂-mediated crystallization replacing traditional hexane-based methods since late 2023. This modification reduced environmental footprint by 67% while maintaining product purity (>99% HPLC assay). Such advancements align with global regulatory trends emphasizing eco-friendly manufacturing practices without compromising pharmaceutical quality standards.

In vitro cytotoxicity profiling against multiple cancer cell lines reveals selective inhibition patterns across different malignancies. Data from *Cancer Research* (January 2024) showed IC₅₀ values ranging from 5.6 μM (breast cancer MCF-7 cells) to >50 μM (non-malignant fibroblasts), indicating therapeutic index potential when compared to conventional chemotherapeutics like doxorubicin (p^<.05 significance at all tested concentrations). Mechanistic investigations point toward dual inhibition of PI3K/Akt and NF-kB pathways as primary cytotoxic mechanisms.

Safety pharmacology studies conducted under GLP guidelines confirmed no cardiotoxic effects up to maximum tested doses (MTD: 80 mg/kg i.p.). Electrocardiogram recordings from cynomolgus monkeys demonstrated no QTc prolongation or arrhythmogenic events across dose-response curves published by Charles River Laboratories (March 2024). These results address critical safety concerns associated with pyrazole-containing compounds historically linked to cardiac liabilities through hERG channel interactions.

The compound's structural versatility has spurred investigations into prodrug strategies for poorly soluble APIs. A self-emulsifying delivery system developed by Purdue University researchers increased aqueous solubility by three orders of magnitude while preserving chemical stability under gastrointestinal conditions (pH range: 1–8 tested over 48 hours). This formulation approach could overcome bioavailability limitations observed in early rodent studies where oral absorption efficiency was only ~6% using standard suspensions.

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