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Bresciani G, Zacchini S, Pampaloni G, Bortoluzzi M, Marchetti F. Diiron Aminocarbyne Complexes with NCE− Ligands (E = O, S, Se). Molecules 2023; 28:molecules28073251. [PMID: 37050013 PMCID: PMC10096932 DOI: 10.3390/molecules28073251] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/29/2023] [Accepted: 04/01/2023] [Indexed: 04/09/2023] Open
Abstract
Diiron μ-aminocarbyne complexes [Fe2Cp2(NCMe)(CO)(μ-CO){μ-CN(Me)(R)}]CF3SO3 (R = Xyl, [1aNCMe]CF3SO3; R = Me, [1bNCMe]CF3SO3; R = Cy, [1cNCMe]CF3SO3; R = CH2Ph, [1dNCMe]CF3SO3), freshly prepared from tricarbonyl precursors [1a–d]CF3SO3, reacted with NaOCN (in acetone) and NBu4SCN (in dichloromethane) to give [Fe2Cp2(kN-NCO)(CO)(μ-CO){μ-CN(Me)(R)}] (R = Xyl, 2a; Me, 2b; Cy, 2c) and [Fe2Cp2(kN-NCS)(CO)(μ-CO){μ-CN(Me)(CH2Ph)}], 3 in 67–81% yields via substitution of the acetonitrile ligand. The reaction of [1aNCMe–1cNCMe]CF3SO3 with KSeCN in THF at reflux temperature led to the cyanide complexes [Fe2Cp2(CN)(CO)(μ-CO){μ-CNMe(R)}], 6a–c (45–67%). When the reaction of [1aNCMe]CF3SO3 with KSeCN was performed in acetone at room temperature, subsequent careful chromatography allowed the separation of moderate amounts of [Fe2Cp2(kSe-SeCN)(CO)(μ-CO){μ-CN(Me)(Xyl)}], 4a, and [Fe2Cp2(kN-NCSe)(CO)(μ-CO){μ-CN(Me)(Xyl)}], 5a. All products were fully characterized by elemental analysis, IR, and multinuclear NMR spectroscopy; moreover, the molecular structure of trans-6b was ascertained by single crystal X-ray diffraction. DFT calculations were carried out to shed light on the coordination mode and stability of the {NCSe-} fragment.
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Affiliation(s)
- Giulio Bresciani
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy
- Interuniversity Consortium for Chemical Reactivity and Catalysis, CIRCC, Via Celso Ulpiani 27, I-70126 Bari, Italy
| | - Stefano Zacchini
- Interuniversity Consortium for Chemical Reactivity and Catalysis, CIRCC, Via Celso Ulpiani 27, I-70126 Bari, Italy
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Guido Pampaloni
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy
- Interuniversity Consortium for Chemical Reactivity and Catalysis, CIRCC, Via Celso Ulpiani 27, I-70126 Bari, Italy
| | - Marco Bortoluzzi
- Interuniversity Consortium for Chemical Reactivity and Catalysis, CIRCC, Via Celso Ulpiani 27, I-70126 Bari, Italy
- Department of Molecular Science and Nanosystems, University of Venezia “Ca’ Foscari”, Via Torino 155, I-30170 Mestre, Italy
| | - Fabio Marchetti
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, I-56124 Pisa, Italy
- Interuniversity Consortium for Chemical Reactivity and Catalysis, CIRCC, Via Celso Ulpiani 27, I-70126 Bari, Italy
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Akiyama H, Ishibashi A, Kai T, Kikuchi A, Taguchi T, Fukiwake T, Tsutsumi T, Asakura H, Ito R. Determination of Cyanide and Cyanoglycosides in Sweetened Bean Paste by HPLC with Fluorescence Detection. Biol Pharm Bull 2023; 46:1024-1026. [PMID: 37394634 DOI: 10.1248/bpb.b23-00118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
It is necessary to evaluate the efficiency of reduction for cyanide and cyanoglycosides during the manufacturing process from raw material beans to sweetened bean paste in a food hygiene control system from the viewpoint of food safety. Analytical methods for cyanide and cyanoglycoside determination in sweetened bean paste by HPLC with fluorescence detection were developed. In analysis of collection time of free cyanide in the free cyanide assay, the recovery was improved by extending the collection time, the recovery rate was >80% by 2 h. The accuracy, repeatability and intra-laboratory precision of the free cyanide assay were 82.3, 2.0, and 2.4%, respectively. The method for cyanoglycoside analysis was evaluated by 5 repeated spiked recovery experiments at a concentration of 10 ppm. The accuracy, repeatability and intra-laboratory precision of the cyanoglycoside method were 82.2, 1.9, and 3.4%, respectively. These analytical methods will enable the analysis of cyanide and cyanoglycosides in sweetened bean paste without using steam distillation method in the pretreatment.
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Affiliation(s)
- Hiroshi Akiyama
- School of Pharmaceutical Sciences, Hoshi University
- National Institute of Health Sciences
| | | | - Tsuyoshi Kai
- School of Pharmaceutical Sciences, Hoshi University
| | | | | | - Tomohide Fukiwake
- School of Pharmaceutical Sciences, Hoshi University
- Chiba Prefectural Institute of Public Health
| | | | | | - Rie Ito
- School of Pharmaceutical Sciences, Hoshi University
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Shimekake M, Komeno M, Taguchi M, Katsumoto S, Tanda Y, Sato K, Wada T, Toida T, Higashi K. Analysis of Acetylated Hyaluronic Acid in Moisturizing Lotion and Milk Lotion by HPLC with Fluorescence Detection. Chem Pharm Bull (Tokyo) 2023; 71:616-619. [PMID: 37394608 DOI: 10.1248/cpb.c23-00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
We developed a simple and sensitive analytical HPLC method for the determination of acetylated hyaluronic acid (AcHA) in moisturizing and milk lotions. AcHA with different molecular weights was separated as a single peak using a C4 column and detected through post-column derivatization using 2-cyanoacetamide. The limits of detection and quantification were 60 and 200 ng, respectively. We found that AcHA in water was successfully extracted into a strong anion exchange (SAX) spin column with a recovery rate of AcHA was 63.8 ± 1.8%. Although the supernatant from acetone precipitation of lotions could pass through the spin column, the recovery rate (%) and accuracy of AcHA were affected by the viscous properties of cosmetics and acidic and acetone-soluble ingredients. Upon conducting analytical methods in this study, the concentration of AcHA in nine lotions was found to have ranged from 7.50 to 83.3 µg/mL. These values are comparable to the concentration range of AcHA in emulsions that have been previously evaluated for their superior effects. We believe that the analytical and extraction method is useful for the qualitative analysis of AcHA in moisturizing and milk lotions.
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Affiliation(s)
- Momo Shimekake
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Masahiro Komeno
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Manawo Taguchi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Shoo Katsumoto
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Yuna Tanda
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Kazuki Sato
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Takeshi Wada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Kyohei Higashi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
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Hongprasit A, Okamoto Y, Toida T, Ogra Y. Comparison of quantification of selenocyanate and thiocyanate in cultured mammalian cells between HPLC-fluorescence detector and HPLC-inductively coupled plasma mass spectrometer. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1181:122924. [PMID: 34508979 DOI: 10.1016/j.jchromb.2021.122924] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 08/03/2021] [Accepted: 09/01/2021] [Indexed: 11/28/2022]
Abstract
The simultaneous detection of cyanide (CN), thiocyanate (SCN), and selenocyanate (SeCN) by a HPLC-fluorescence detector (FLD) with the post-column König reaction was recently reported. SCN and SeCN are also detectable by HPLC-inductively coupled plasma mass spectrometry (HPLC-ICP-MS) because sulfur and selenium can be detected, respectively, without any pre- or post-treatment. ICP-MS has high sensitivity for selenium and sulfur detection and is robust to sample matrices. In this study, we compared HPLC-FLD with the post-column König reaction and HPLC-ICP-MS in terms of SCN and SeCN detection sensitivity and linearity. The limit of detection (LOD) for SCN indicated that HPLC-FLD with the post-column König reaction was 354 times more sensitive than HPLC-ICP-MS. Likewise, the LOD for SeCN indicated that HPLC-FLD was 51 times more sensitive than HPLC-ICP-MS. These results demonstrated that HPLC-FLD was a more suitable technique for SeCN and SCN detection than HPLC-ICP-MS. We previously reported that SeCN was generated in selenite-exposed mammalian cells to detoxify excess selenite. HPLC-FLD with the post-column König reaction enabled good separation and detection for quantifying SCN and SeCN in mammalian cell lines exposed to selenite. The intracellular SCN and SeCN concentrations determined by this technique suggested differences in the metabolic capacity for selenite to form SeCN among the cell lines. In addition, since the amount of intracellular SCN and SeCN were significantly decreased by pretreatment of myeloperoxidase (MPO) inhibitors, SCN and SeCN were resulted from the interaction of sulfur and selenium with endogenous CN, respectively, generated with MPO.
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Affiliation(s)
- Aphinan Hongprasit
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8675, Japan
| | - Yusuke Okamoto
- Division of Foods, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-9501, Japan
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8675, Japan
| | - Yasumitsu Ogra
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8675, Japan.
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