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Lungu L, Blaja S, Cucicova C, Ciocarlan A, Barba A, Kulcițki V, Shova S, Vornicu N, Geana EI, Mangalagiu II, Aricu A. Synthesis and Antimicrobial Activity Evaluation of Homodrimane Sesquiterpenoids with a Benzimidazole Unit. Molecules 2023; 28:molecules28030933. [PMID: 36770601 PMCID: PMC9921711 DOI: 10.3390/molecules28030933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/09/2023] [Accepted: 01/13/2023] [Indexed: 01/18/2023] Open
Abstract
Herein we report a feasible study concerning the synthesis and the in vitro antimicrobial activity of some new homodrimane sesquiterpenoids with a benzimidazole unit. Based on some homodrimane carboxylic acids, on their acyl chlorides and intermediate monoamides, a series of seven N-homodrimenoyl-2-amino-1,3-benzimidazoles and 2-homodrimenyl-1,3-benzimidazoles was synthesized. The syntheses involved the decarboxylative cyclization and condensation of the said acids or acyl chlorides with o-phenylendiamine and 2-aminobenzimidazole, as well as the p-TsOH-mediated cyclodehydration of the said monoacylamides. The structures of the synthesized compounds have been fully confirmed, including by the X-ray diffraction. Their biological activities were evaluated on five species of fungi (Aspergillus niger, Fusarium solani, Penicillium chrysogenum, P. frequentans, and Alternaria alternata) and two strains of bacteria (Bacillus sp. and Pseudomonas aeruginosa). Compounds 7 and 20 showed higher antifungal (MIC = 0.064 and 0.05 μg/mL) and antibacterial (MIC = 0.05 and 0.032 μg/mL) activities compared to those of the standards: caspofungin (MIC = 0.32 μg/mL) and kanamycin (MIC = 2.0 μg/mL), and compounds 4, 10, 14, and 19 had moderate activities.
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Affiliation(s)
- Lidia Lungu
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., 2028 Chisinau, Moldova
| | - Svetlana Blaja
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., 2028 Chisinau, Moldova
| | - Caleria Cucicova
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., 2028 Chisinau, Moldova
| | - Alexandru Ciocarlan
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., 2028 Chisinau, Moldova
| | - Alic Barba
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., 2028 Chisinau, Moldova
| | - Veaceslav Kulcițki
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., 2028 Chisinau, Moldova
| | - Sergiu Shova
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41-A, 700487 Iasi, Romania
| | - Nicoleta Vornicu
- Metropolitan Center of Research T.A.B.O.R., 9 Closca Str., 700066 Iasi, Romania
| | - Elisabeta-Irina Geana
- Department of Research and Development, National Research and Development Institute for Cryogenics and Isotopic Technologies—ICSI Rm., Valcea, 4th Uzinei Str., 240050 Râmnicu Vâlcea, Romania
| | - Ionel I. Mangalagiu
- Faculty of Chemistry, “Alexandru Ioan Cuza” University of Iasi, 11 Carol Bd., 700506 Iasi, Romania
| | - Aculina Aricu
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., 2028 Chisinau, Moldova
- Correspondence: or
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Ciocarlan A. From (-)-sclareol to Norlabdane Heterocyclic Hybrid Compounds. CHEMISTRY JOURNAL OF MOLDOVA 2022. [DOI: 10.19261/cjm.2022.958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
This review relates to chemistry of the well-known biologically active natural labdane diterpenoid (-)-sclareol easily available from Clary sage (Salvia sclarea L.). It is mainly used in industry, especially for synthesis of fragrance compounds and natural analogs. The paper covers achievements on the synthesis, structure determination and biological activity of molecular hybrid compounds bearing hydrazide and thiosemicarbazone fragments or diazine, 1,2,4-triazole, carbazole, 1,3-thiazole, 1,3,4-oxadiazole, 1,3,4-thiadiazole units prepared based on it.
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Affiliation(s)
- Alexandru Ciocarlan
- Institute of Chemistry, 3 Academiei str., Chisinau MD 2028, Republic of Moldova
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Lungu L, Cucicova C, Blaja S, Ciocarlan A, Dragalin I, Barba A, Vornicu N, Geana EI, Mangalagiu II, Aricu A. Synthesis of Homodrimane Sesquiterpenoids Bearing 1,3-Benzothiazole Unit and Their Antimicrobial Activity Evaluation. Molecules 2022; 27:molecules27165082. [PMID: 36014322 PMCID: PMC9414590 DOI: 10.3390/molecules27165082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/02/2022] [Accepted: 08/07/2022] [Indexed: 12/01/2022] Open
Abstract
Based on some homodrimane carboxylic acids and their acyl chlorides, a series of fourteen 2-homodrimenyl-1,3-benzothiazoles, N-homodrimenoyl-2-amino-1,3-benzothiazoles, 4′-methyl-homodrimenoyl anilides and 4′-methyl-homodrimenthioyl anilides were synthesized and their biological activities were evaluated on five species of fungi (Aspergillus niger, Fusarium solani, Penicillium chrysogenum, P. frequentans, and Alternaria alternata) and two strains of bacteria (Bacillus sp. and Pseudomonas aeruginosa). The synthesis involved the decarboxylative cyclization, condensation and thionation of the said acids, anhydrides or their derivatives with 2-aminothiophenol, 2-aminobenzothiazole, p-toluidine and Lawesson’s reagent. As a result, together with the desired compounds, some unexpected products 8, 25, and 27 were obtained, and the structures and mechanisms for their formation have been proposed. Compounds 4, 9, and 25 showed higher antifungal and antibacterial activity compared to the standards caspofungin (MIC = 1.5 μg/mL) and kanamycin (MIC = 3.0 μg/mL), while compound 8 had comparable activities. In addition, compounds 6, 17, and 27 showed selective antifungal activity at MIC = 2.0, 0.25, and 1.0 μg/mL, respectively.
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Affiliation(s)
- Lidia Lungu
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., MD-2028 Chisinau, Moldova
| | - Caleria Cucicova
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., MD-2028 Chisinau, Moldova
| | - Svetlana Blaja
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., MD-2028 Chisinau, Moldova
| | - Alexandru Ciocarlan
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., MD-2028 Chisinau, Moldova
| | - Ion Dragalin
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., MD-2028 Chisinau, Moldova
| | - Alic Barba
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., MD-2028 Chisinau, Moldova
| | - Nicoleta Vornicu
- Metropolitan Center of Research T.A.B.O.R., 9 Closca Str., RO-700066 Iasi, Romania
| | - Elisabeta-Irina Geana
- National Research and Development Institute for Cryogenics and Isotopic Technologies—ICSI Rm. Valcea, 4th Uzinei Str., P.O. Box 7, 240050 Ramnicu Valcea, Romania
| | - Ionel I. Mangalagiu
- Faculty of Chemistry, ‘‘Alexandru Ioan Cuza’’ University of Iasi, 11 Carol Bd., RO-700506 Iasi, Romania
| | - Aculina Aricu
- Chemistry of Natural and Biologically Active Compounds Laboratory, Institute of Chemistry, 3 Academiei Str., MD-2028 Chisinau, Moldova
- Correspondence: or
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