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Kamei T, Miyazaki J, Hori R, Saito H, Takahashi T, Shinohara KI, Miura M, Suzuki H. Spectral and HPLC Analyses of Synthesized Butin and Butein. Chem Pharm Bull (Tokyo) 2024; 72:648-657. [PMID: 38972722 DOI: 10.1248/cpb.c24-00239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Butin and butein are significant bioactive flavanones derived from plants, existing as tautomers of each other. However, their physicochemical attributes, such as their spectral profiles under varying experimental conditions in aqueous solutions and established chromatographic methods for distinguishing between them, remain undetermined. In this study, we determined the basic properties of butin and butein using conventional spectroscopic, reversed-phase, and chiral HPLC analyses. The spectra of the synthesized butin and butein were analyzed using a UV-Vis spectrophotometer in several solvents with different polarities as well as in aqueous solutions at various pH values. Furthermore, the behavior of the measured spectra was reproduced by calculations to reveal the effects of the solvent and pH on the spectra of butin and butein in organic and aqueous solutions. Subsequently, we assessed the structural stability of butin and butein using reversed-phase HPLC, which revealed that butein is unstable compared with butin in a general culture medium. The synthesized butin was effectively separated into R- and S-isomers with positive and negative Cotton effects, respectively, via HPLC using a chiral column. These findings will aid in uncovering the individual properties of both butin and butein that may have been concealed by their tautomerism and enable the synthesis of S-butin, which is typically challenging and time-consuming to isolate.
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Affiliation(s)
- Takashi Kamei
- Faculty of Pharmaceutical Sciences, Hokuriku University
- Healthy Aging Research Group, Hokuriku University
| | - Jun Miyazaki
- Department of Natural Sciences, School of Engineering, Tokyo Denki University
| | - Ryoga Hori
- School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST)
| | - Hiroaki Saito
- Faculty of Pharmaceutical Sciences, Hokuriku University
| | - Tatsuo Takahashi
- Faculty of Pharmaceutical Sciences, Hokuriku University
- Healthy Aging Research Group, Hokuriku University
| | - Ken-Ichi Shinohara
- School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST)
| | - Masakazu Miura
- Faculty of Pharmaceutical Sciences, Hokuriku University
- Healthy Aging Research Group, Hokuriku University
| | - Hirokazu Suzuki
- Faculty of Pharmaceutical Sciences, Hokuriku University
- Healthy Aging Research Group, Hokuriku University
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Galbiati A, Zana A, Coser C, Tamborini L, Basilico N, Parapini S, Taramelli D, Conti P. Development of Potent 3-Br-isoxazoline-Based Antimalarial and Antileishmanial Compounds. ACS Med Chem Lett 2021; 12:1726-1732. [PMID: 34795860 DOI: 10.1021/acsmedchemlett.1c00354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 10/07/2021] [Indexed: 11/30/2022] Open
Abstract
Starting from the structure of previously reported 3-Br-isoxazoline-based covalent inhibitors of P. falciparum glyceraldehyde 3-phosphate dehydrogenase, and with the intent to improve their metabolic stability and antimalarial activity, we designed and synthesized a series of simplified analogues that are characterized by the insertion of the oxadiazole ring as a bioisosteric replacement for the metabolically labile ester/amide function. We then further replaced the oxadiazole ring with a series of five-membered heterocycles and finally combined the most promising structural features. All the new derivatives were tested in vitro for antimalarial as well as antileishmanial activity. We identified two very promising new lead compounds, endowed with submicromolar antileishmanial activity and nanomolar antiplasmodial activity, respectively, and a very high selectivity index with respect to mammalian cells.
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Affiliation(s)
- Andrea Galbiati
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, Milano 20133, Italy
- Centro Interuniversitario di Ricerca sulla Malaria/Italian Malaria Network, Università degli Studi di Milano, Via Pascal 36, Milano 20133, Italy
| | - Aureliano Zana
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, Milano 20133, Italy
| | - Consuelo Coser
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, Milano 20133, Italy
| | - Lucia Tamborini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, Milano 20133, Italy
- Centro Interuniversitario di Ricerca sulla Malaria/Italian Malaria Network, Università degli Studi di Milano, Via Pascal 36, Milano 20133, Italy
| | - Nicoletta Basilico
- Dipartimento di Scienze Biomediche, Chirurgiche e Odontoiatriche, Università degli Studi di Milano, Via Pascal 36, Milano 20133, Italy
- Centro Interuniversitario di Ricerca sulla Malaria/Italian Malaria Network, Università degli Studi di Milano, Via Pascal 36, Milano 20133, Italy
| | - Silvia Parapini
- Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Via Pascal 36, Milano 20133, Italy
- Centro Interuniversitario di Ricerca sulla Malaria/Italian Malaria Network, Università degli Studi di Milano, Via Pascal 36, Milano 20133, Italy
| | - Donatella Taramelli
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Pascal 36, Milano 20133, Italy
- Centro Interuniversitario di Ricerca sulla Malaria/Italian Malaria Network, Università degli Studi di Milano, Via Pascal 36, Milano 20133, Italy
| | - Paola Conti
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, Milano 20133, Italy
- Centro Interuniversitario di Ricerca sulla Malaria/Italian Malaria Network, Università degli Studi di Milano, Via Pascal 36, Milano 20133, Italy
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Abstract
An efficient and convergent first total syntheses of (±)-japonicol B and (-)-japonicol C have been completed. The notable points of the synthetic route are Lewis-acid-catalyzed Friedel-Crafts reaction for one pot C-C and C-O bond formations resulting in construction of the tricyclic meroterpenoid skeleton, one pot Pd(OH)2/C-catalyzed isomerization/hydrogenation, and site selective sp3 C-H oxidation.
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Affiliation(s)
- Dattatraya H Dethe
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur - 208016, India
| | - Appasaheb K Nirpal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur - 208016, India
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A study of enantioselective syntheses by Sharpless asymmetric oxidation for aryl sulfoxides containing oxygen groups at the ortho position. J CHEM SCI 2021. [DOI: 10.1007/s12039-021-01887-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Pacherille A, Tuga B, Hallooman D, Dos Reis I, Vermette M, Issack BB, Rhyman L, Ramasami P, Sunasee R. BiCl 3-Facilitated removal of methoxymethyl-ether/ester derivatives and DFT study of –O–C–O– bond cleavage. NEW J CHEM 2021. [DOI: 10.1039/d1nj00449b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An experimental and DFT study of the cleavage of the MOM group mediated by an eco-friendly reagent, bismuth trichloride.
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Affiliation(s)
- Angela Pacherille
- Department of Chemistry
- State University of New York at Plattsburgh
- Plattsburgh
- USA
| | - Beza Tuga
- Department of Chemistry
- State University of New York at Plattsburgh
- Plattsburgh
- USA
| | - Dhanashree Hallooman
- Computational Chemistry Group, Department of Chemistry
- Faculty of Science, University of Mauritius
- Réduit 80837
- Mauritius
| | - Isaac Dos Reis
- Department of Chemistry
- State University of New York at Plattsburgh
- Plattsburgh
- USA
| | - Mélodie Vermette
- Département des Sciences Expérimentales
- Université de Saint-Boniface
- Winnipeg
- Canada
| | - Bilkiss B. Issack
- Département des Sciences Expérimentales
- Université de Saint-Boniface
- Winnipeg
- Canada
| | - Lydia Rhyman
- Computational Chemistry Group, Department of Chemistry
- Faculty of Science, University of Mauritius
- Réduit 80837
- Mauritius
- Department of Chemical Sciences
| | - Ponnadurai Ramasami
- Computational Chemistry Group, Department of Chemistry
- Faculty of Science, University of Mauritius
- Réduit 80837
- Mauritius
- Department of Chemical Sciences
| | - Rajesh Sunasee
- Department of Chemistry
- State University of New York at Plattsburgh
- Plattsburgh
- USA
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