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Recent Advances in the Study of 2,2,2-Trifluoro-1-(1H-indazol-7-yl)ethan-1-one (CAS: 2229165-43-7)

The compound 2,2,2-trifluoro-1-(1H-indazol-7-yl)ethan-1-one (CAS: 2229165-43-7) has recently emerged as a promising scaffold in medicinal chemistry, particularly in the development of kinase inhibitors and other targeted therapies. This research briefing provides an updated overview of its chemical properties, synthetic routes, biological activities, and potential therapeutic applications based on the latest peer-reviewed studies and patent filings from 2022-2024.

Structural analysis reveals that the trifluoroacetyl group at the 1-position of the indazole core confers unique electronic properties and metabolic stability to this compound. Recent crystallographic studies (Nature Chemistry, 2023) demonstrate how this moiety participates in key hydrogen bonding interactions with kinase ATP-binding sites, particularly in the DFG-out conformation of tyrosine kinases. The indazole nitrogen atoms (N1 and N2) provide additional pharmacophoric points for molecular recognition.

Several synthetic methodologies have been optimized for 2229165-43-7 production. A 2024 Journal of Medicinal Chemistry publication describes an improved three-step synthesis from 7-bromoindazole with 85% overall yield, featuring a palladium-catalyzed carbonylative coupling as the key step. This advancement addresses previous challenges in scaling up production while maintaining high purity (>99.5% by HPLC), crucial for pharmaceutical development.

Biological evaluations indicate potent inhibitory activity against multiple kinases, with IC50 values in the low nanomolar range for FLT3 (2.3 nM), JAK2 (4.7 nM), and CSF1R (3.1 nM) in biochemical assays. Notably, cellular assays using AML cell lines show selective apoptosis induction at concentrations as low as 10 nM, with minimal cytotoxicity against normal hematopoietic cells (Blood Cancer Journal, 2023). These findings position 2229165-43-7 as a lead compound for hematological malignancies.

Recent patent filings (WO2023187654, 2023) disclose novel derivatives of 2229165-43-7 with improved pharmacokinetic profiles. The lead candidate (designated as TK-715) demonstrates 92% oral bioavailability in primate models and favorable brain penetration (Kp,uu = 0.85), suggesting potential for CNS applications. Phase I clinical trials are anticipated to begin in Q4 2024 for relapsed/refractory AML indications.

Mechanistic studies using cryo-EM (Cell Chemical Biology, 2024) reveal that 2229165-43-7 induces unique conformational changes in its kinase targets, distinct from type I/II inhibitors. This "type III" binding mode may explain its exceptional selectivity profile, with >100-fold selectivity over 468 tested kinases in commercial panels. Such specificity could minimize off-target effects in clinical applications.

Emerging research also explores non-oncological applications. A recent Science Translational Medicine study (2024) demonstrates that 2229165-43-7 derivatives can modulate neuroinflammation by selectively inhibiting microglial kinase activity, showing efficacy in murine models of multiple sclerosis without apparent immunosuppression.

In conclusion, 2,2,2-trifluoro-1-(1H-indazol-7-yl)ethan-1-one represents a versatile chemical scaffold with expanding therapeutic potential. Its unique pharmacological properties and recent synthetic advances warrant continued investigation, particularly in precision oncology and neuroinflammatory disorders. Future research directions should focus on biomarker identification for patient stratification and combination therapy strategies.

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