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Concepción O, Belmar J, F. de la Torre A, M. Muñiz F, Pertino MW, Alarcón B, Ormazabal V, Nova-Lamperti E, Zúñiga FA, Jiménez CA. Synthesis and Cytotoxic Analysis of Novel Myrtenyl Grafted Pseudo-Peptides Revealed Potential Candidates for Anticancer Therapy. Molecules 2020; 25:molecules25081911. [PMID: 32326138 PMCID: PMC7221699 DOI: 10.3390/molecules25081911] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/11/2020] [Accepted: 04/13/2020] [Indexed: 11/16/2022] Open
Abstract
Myrtenal is a natural monoterpene isolated from essential oils of several plants and their derivates have shown to have several biological properties including cytotoxicity. The cytotoxic activity of these derivates are being investigated for their antitumor effect leading to the development of potential anticancer agents. In this study, novels Myrtenyl grafted pseudo-peptides were designed, synthesized and functionally characterized as possible therapeutic agents for cancer treatment. Thirteen novel Myrtenyl grafted pseudo-peptides were prepared in high atom economy and efficiency by a classic Ugi-4CR and sequential post-modification. Their structures were confirmed by NMR, and ESI-MS, and its cytotoxic activity was evaluated in three cancer cell lines and primary CD4+ T cells at different proliferative cycles. Our results revealed that some of these compounds showed significant cytotoxicity against human gastric, breast and colon adenocarcinoma cells lines, but not against human dermal fibroblast cell line. Moreover, from the thirteen novel myrtenyl synthesized the compound (1R,5S)-N-{[1-(3-chlorophenyl)-1H-1,2,3-triazol-4-yl]methyl}-N-[2-(cyclohexylamino)-2–oxoethyl]-6,6-dimethylbicyclo[3.1.1]hept-2-ene-2-carboxamide (3b) proved to be the best candidate in terms of acceptable EC50, and Emax values in cancer cell lines and at inducing cytotoxicity in CD4+ T cells undergoing active proliferation, without affecting non-proliferating T cells. Overall, the synthesis and characterization of our Myrtenyl derivates revealed novel potential anticancer candidates with selective cytotoxic activity.
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Affiliation(s)
- Odette Concepción
- Department of Organic Chemistry, Faculty of Chemical Sciences, Universidad de Concepción, Edmundo Larenas 129, Concepción P.C. 4070371, Chile; (J.B.); (A.F.d.l.T.); (F.M.M.)
- Correspondence: (O.C.); (C.A.J.); Tel.: +56-41-22042658 (O.C. & C.A.J.)
| | - Julio Belmar
- Department of Organic Chemistry, Faculty of Chemical Sciences, Universidad de Concepción, Edmundo Larenas 129, Concepción P.C. 4070371, Chile; (J.B.); (A.F.d.l.T.); (F.M.M.)
| | - Alexander F. de la Torre
- Department of Organic Chemistry, Faculty of Chemical Sciences, Universidad de Concepción, Edmundo Larenas 129, Concepción P.C. 4070371, Chile; (J.B.); (A.F.d.l.T.); (F.M.M.)
| | - Francisco M. Muñiz
- Department of Organic Chemistry, Faculty of Chemical Sciences, Universidad de Concepción, Edmundo Larenas 129, Concepción P.C. 4070371, Chile; (J.B.); (A.F.d.l.T.); (F.M.M.)
| | - Mariano W. Pertino
- Institute of Natural Resources Chemistry, Universidad de Talca, Casilla 747, Avenida Lircay, Talca P.C. 3462227, Chile;
| | - Barbara Alarcón
- Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, Universidad de Concepción, Concepción P.C. 4070371, Chile; (B.A.); (E.N.-L.); (F.A.Z.)
| | - Valeska Ormazabal
- Department of Pharmacology, Faculty of Biological Sciences, Universidad de Concepción, Concepción P.C. 4070371, Chile;
| | - Estefania Nova-Lamperti
- Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, Universidad de Concepción, Concepción P.C. 4070371, Chile; (B.A.); (E.N.-L.); (F.A.Z.)
| | - Felipe A. Zúñiga
- Department of Clinical Biochemistry and Immunology, Faculty of Pharmacy, Universidad de Concepción, Concepción P.C. 4070371, Chile; (B.A.); (E.N.-L.); (F.A.Z.)
| | - Claudio A. Jiménez
- Department of Organic Chemistry, Faculty of Chemical Sciences, Universidad de Concepción, Edmundo Larenas 129, Concepción P.C. 4070371, Chile; (J.B.); (A.F.d.l.T.); (F.M.M.)
- Correspondence: (O.C.); (C.A.J.); Tel.: +56-41-22042658 (O.C. & C.A.J.)
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Synthesis and Antifungal Activity of Novel Myrtenal-Based 4-Methyl-1,2,4-triazole-thioethers. Molecules 2017; 22:molecules22020193. [PMID: 28125042 PMCID: PMC6155697 DOI: 10.3390/molecules22020193] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 01/21/2017] [Accepted: 01/21/2017] [Indexed: 01/02/2023] Open
Abstract
A series of novel myrtenal derivatives bearing 1,2,4-triazole moiety were designed and synthesized by multi-step reactions in an attempt to develop potent antifungal agents. Their structures were confirmed by using UV-vis, FTIR, NMR, and ESI-MS analysis. Antifungal activity of the target compounds was preliminarily evaluated by the in vitro method against Fusarium oxysporum f. sp. cucumerinum, Physalospora piricola, Alternaria solani, Cercospora arachidicola, and Gibberella zeae at 50 µg/mL. Compounds 6c (R = i-Pr), 6l (R = o-NO2 Bn), and 6a (R = Et) exhibited excellent antifungal activity against P. piricola with inhibition rates of 98.2%, 96.4%, and 90.7%, respectively, showing better or comparable antifungal activity than that of the commercial fungicide azoxystrobin with a 96.0% inhibition rate, which served as a positive control.
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Unexpected formation of 10-iodo- and 10-chlorocamphor under halosulfonylation conditions, and convenient routes to 10-chloro- and 10-bromocamphor. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.05.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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