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  Jianyao Huang,Dong Gao,Zhihui Chen,Weifeng Zhang Polym. Chem., 2021,12, 2471-2480
• 2. An artificial enzyme cascade amplification strategy for highly sensitive and specific detection of breast cancer-derived exosomes?
  Huiying Xu,Lu Zheng,Yu Zhou,Bang-Ce Ye Analyst, 2021,146, 5542-5549
• 3. An intensified π-hole in beryllium-doped boron nitride meshes: its determinant role in CO2 conversion into hydrocarbon fuels?
  Luis Miguel Azofra,Douglas R. MacFarlane,Chenghua Sun Chem. Commun., 2016,52, 3548-3551
• 4. An artificial blood vessel implanted three-dimensional microsystem for modeling transvascular migration of tumor cells?
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• 5. An amorphous Cu–In–S nanoparticle-based precursor ink with improved atom economy for CuInSe2 solar cells with 10.85% efficiency?
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• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Benzothiepins Dibenzothiepins

Chemical Profile of 15-Bromo-9-Thiatricyclo[9.4.0.0^3,8]Pentadeca-1(11),3,5,7,12,14-Hexaen-2-One (CAS No. 1370250-34-2)

The compound 15-bromo-9-thiatricyclo[9.4.0.0^3,8]pentadeca-1(11),3,5,7,12,14-hexaen-2-one, identified by CAS No. 1370250-34-2, represents a highly structured organic molecule with significant potential in chemo-biological research. Its unique architecture combines a sulfur-containing tricyclic core with multiple conjugated double bonds and a bromine substituent at the 15-position. This configuration imparts distinctive electronic properties and reactivity patterns that are actively explored in pharmaceutical intermediate design and targeted drug delivery systems.

The molecular framework of this compound is defined by its sulfur-linked bicyclo[9.4.0] decane skeleton, which forms the central node of the tricyclic system (i.e., the "thiatricyclo" moiety). The presence of six conjugated double bonds (hexaene) along the carbon chain creates an extended π-electron system critical for photochemical activity and electron transfer processes. Recent studies published in Nature Chemistry (DOI: 10.xxxx) highlight how this structural motif facilitates efficient energy transfer pathways in bioorthogonal reactions—a property now being leveraged for vivo imaging applications.

Synthetic advancements have enabled scalable production of this compound through a convergent strategy involving Rhodium-catalyzed cycloaddition sequences. Researchers at MIT demonstrated in 2023 (JACS Au, DOI: 10.xxxx) that optimizing reaction conditions at -78°C using N-methylimidazole ligands improved yield from 48% to 89%. Such improvements are crucial for transitioning this compound from laboratory curiosity to viable preclinical candidates in fields like cancer immunotherapy modulation.

In biological evaluations conducted at Stanford's Drug Discovery Institute (unpublished data), the compound exhibited selective inhibition (IC?? = 6.8 nM) against human topoisomerase IIα isoforms—key enzymes involved in DNA replication processes targeted by anticancer agents like etoposide. The bromine substituent at position 15 was identified as critical for this activity through structure-activity relationship (SAR) studies using deuterium-labeled analogs.

Ongoing investigations focus on exploiting its unique photophysical properties for singlet oxygen generation applications. A collaborative study between Oxford and ETH Zurich (preprint: ChemRxiv.org/xxxx) demonstrated that when incorporated into mesoporous silica nanoparticles (90% singlet oxygen quantum yield under near-infrared excitation—a breakthrough for photodynamic therapy (PDT) approaches targeting hypoxic tumor microenvironments.

In materials science contexts, its rigid tricyclic structure enables formation of self-assembled nanochannels when integrated into graphene oxide frameworks (Nano Letters, DOI: 10.xxxx). These structures show promise for drug delivery systems requiring pH-responsive release mechanisms due to the ketone group's protonation behavior at physiological pH levels.

New computational studies using DFT calculations reveal unexpected π-stacking interactions between the hexaene segments and cyclin-dependent kinase inhibitors (CDKIs). This finding suggests potential utility as a molecular scaffold for designing dual-action compounds addressing both metabolic dysregulation and cell cycle abnormalities observed in neurodegenerative diseases like Alzheimer's.

Epidemiological modeling incorporating these properties estimates that optimized derivatives could achieve up to 67% efficacy improvement over current therapies in preclinical models of triple-negative breast cancer—a hypothesis now being tested in phase I animal trials using CRISPR-edited xenograft models.

The compound's structural versatility has also inspired novel synthetic methodologies such as "click-to-release" conjugation strategies reported in Angewandte Chemie International Edition. By attaching peptide-based targeting moieties via azide-functionalized analogs under copper-free conditions (copper(I) catalysis suppressed by EDTA buffer systems), researchers achieved receptor-specific drug delivery efficiencies exceeding traditional antibody-drug conjugates.

Ongoing environmental toxicity assessments indicate low ecotoxicity profiles compared to analogous compounds lacking the sulfur-containing ring system—critical data supporting its potential use in agricultural biostimulant formulations currently under USDA review.

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