• 1. 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
• 2. Evolution of dealloying induced strain in nanoporous gold crystals?
  Ross Harder,David C. Dunand,Ian McNulty Nanoscale, 2017,9, 5686-5693
• 3. Fate of single walled carbon nanotubes in wetland ecosystems?
  Joseph H. Bisesi,Tara Sabo-Attwood Environ. Sci.: Nano, 2014,1, 574-583
• 4. Enabling non-flammable Li-metal batteries via electrolyte functionalization and interface engineering?
  Jing Yu,Yu-Qi Lyu,Jiapeng Liu,Mohammed B. Effat,Junxiong Wu J. Mater. Chem. A, 2019,7, 17995-18002
• 5. Excimer emission and magnetoluminescence of radical-based zinc(ii) complexes doped in host crystals?
  Shojiro Kimura,Tetsuro Kusamoto Chem. Commun., 2020,56, 11195-11198

Introduction to 4-(9H-Fluoren-9-ylmethoxycarbonylamino)-tetrahydro-thiopyran-4-carboxylic acid (CAS No. 368866-35-7)

4-(9H-Fluoren-9-ylmethoxycarbonylamino)-tetrahydro-thiopyran-4-carboxylic acid, identified by its Chemical Abstracts Service (CAS) number 368866-35-7, is a sophisticated organic compound that has garnered significant attention in the field of pharmaceutical chemistry and medicinal biology. This compound belongs to a class of molecules characterized by its intricate structural framework, which integrates a fluorenylmethoxycarbonyl (Fmoc) protecting group with a tetrahydro-thiopyran core. The presence of these functional moieties not only imparts unique chemical properties but also opens up diverse possibilities for its application in drug discovery and molecular synthesis.

The tetrahydro-thiopyran scaffold is a heterocyclic structure that has been extensively studied for its pharmacological relevance. Thiopyran derivatives are known for their ability to interact with biological targets, making them valuable intermediates in the development of therapeutic agents. In particular, the four-membered ring of tetrahydro-thiopyran contributes to the molecule's flexibility and lipophilicity, which are critical factors in determining its bioavailability and binding affinity. The incorporation of a carboxylic acid group at the 4-position further enhances its reactivity, allowing for subsequent modifications such as amidation or esterification.

The Fmoc protecting group, on the other hand, is a cornerstone in peptide synthesis and has been widely employed to safeguard amino groups during multi-step organic transformations. The fluorenylmethoxycarbonyl moiety is particularly favored due to its stability under various reaction conditions and ease of removal under mild acidic conditions. This feature makes 4-(9H-Fluoren-9-ylmethoxycarbonylamino)-tetrahydro-thiopyran-4-carboxylic acid an excellent candidate for applications in solid-phase peptide synthesis (SPPS) and as a building block for more complex peptidomimetics.

Recent advancements in medicinal chemistry have highlighted the potential of heterocyclic compounds as pharmacophores. The tetrahydro-thiopyran core has been shown to exhibit activities across multiple therapeutic areas, including anti-inflammatory, antiviral, and anticancer effects. For instance, studies have demonstrated that derivatives of thiopyran can modulate enzyme activity by binding to specific pockets on target proteins. The structural motif's ability to adopt multiple conformations also contributes to its versatility in drug design.

In the context of drug development, the combination of the Fmoc protecting group and the tetrahydro-thiopyran scaffold offers a strategic advantage. The protecting group ensures that the amino functionality remains inert during synthetic steps, while the heterocyclic core provides a scaffold that can be further functionalized to enhance binding interactions with biological targets. This dual functionality makes 4-(9H-Fluoren-9-ylmethoxycarbonylamino)-tetrahydro-thiopyran-4-carboxylic acid a valuable asset in the chemist's toolbox.

Recent research has also explored the use of fluorene-based derivatives in medicinal chemistry due to their favorable photophysical properties. The fluorene moiety is known for its fluorescence characteristics, which can be exploited in diagnostic imaging and photodynamic therapy applications. While this compound's primary focus may lie in synthetic chemistry, its structural features hint at potential applications beyond traditional pharmaceuticals.

The carboxylic acid functionality at the 4-position of the tetrahydro-thiopyran ring provides an additional layer of reactivity that can be leveraged for further derivatization. This allows chemists to introduce various substituents, such as alcohols, amines, or thiols, depending on the desired outcome. Such modifications can fine-tune the physicochemical properties of the molecule, including solubility, stability, and metabolic clearance.

From a synthetic perspective, 4-(9H-Fluoren-9-ylmethoxycarbonylamino)-tetrahydro-thiopyran-4-carboxylic acid serves as an intermediate that can be used to construct more complex molecules via cross-coupling reactions or nucleophilic substitutions. Its compatibility with modern synthetic methodologies makes it a versatile building block for both small-molecule drug discovery and peptidomimetic design.

The growing interest in heterocyclic chemistry has been fueled by reports demonstrating that these compounds often exhibit superior pharmacological profiles compared to their acyclic counterparts. The rigid yet flexible nature of heterocyclic rings allows for optimal interactions with biological targets while minimizing off-target effects. This is particularly relevant in cases where precise spatial orientation is critical for efficacy.

In summary,4-(9H-Fluoren-9-ylmethoxycarbonylamino)-tetrahydro-thiopyran-4-carboxylic acid (CAS No. 368866-35-7) represents a promising compound with applications spanning synthetic chemistry, peptide science, and drug development. Its unique structural features—comprising an Fmoc protected amino group linked to a tetrahydro-thiopyran core—position it as a versatile intermediate for constructing biologically active molecules. As research continues to uncover new therapeutic opportunities within heterocyclic chemistry,this compound is likely to play an increasingly important role in the discovery and development of novel pharmaceutical agents.

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