1
|
Valderas-García E, de la Vega J, Álvarez Bardón M, Castilla Gómez de Agüero V, Escarcena R, López-Pérez JL, Rojo-Vázquez FA, San Feliciano A, Del Olmo E, Balaña-Fouce R, Martínez-Valladares M. Anthelmintic activity of aminoalcohol and diamine derivatives against the gastrointestinal nematode Teladorsagia circumcincta. Vet Parasitol 2021; 296:109496. [PMID: 34147018 DOI: 10.1016/j.vetpar.2021.109496] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 05/26/2021] [Accepted: 06/08/2021] [Indexed: 01/07/2023]
Abstract
Gastrointestinal nematodes (GIN) infections are a serious problem in livestock production due to the great economic losses they cause. Their control is increasingly difficult because of the rapid development of drug resistance and the limited number of available drugs. Therefore, this study evaluated 18 aminoalcohol and 16 diamine derivatives against eggs, first and third stage larvae from a susceptible and a resistant isolate of Teladorsagia circumcincta collected from sheep. The effectiveness of the in vitro anthelmintic activity of the compounds was evaluated using three different procedures: Egg Hatch Test (EHT), Larval Mortality Test (LMT) and Larval Migration Inhibition Test (LMIT). Those compounds with activities higher than 90 % in the initial screening at 50 μM were selected to determine their half maximal effective concentration (EC50). In parallel, cytotoxicity assays were conducted on Caco2 and HepG2 cell lines to calculate Selectivity Indexes (SI) for each compound. The diamine 30 presented the best results in preventing egg hatching, displaying the lowest EC50 value (1.01 ± 0.04 μM) of all compounds tested and the highest SI (21.21 vs. Caco-2 cells). For the LMIT, the diamine 34 showed the highest efficacy, with EC50 values of 2.67 ± 0.08 and 3.02 ± 0.09 μM on the susceptible and resistant isolate of the parasite, respectively.
Collapse
Affiliation(s)
- Elora Valderas-García
- Instituto de Ganadería de Montaña, CSIC-Universidad de León, 24346, Grulleros, León, Spain; Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, 24071, León, Spain
| | - Jennifer de la Vega
- Departamento de Ciencias Farmacéuticas: Química Farmacéutica, Facultad de Farmacia, Universidad de Salamanca, CIETUS, IBSAL, 37007, Salamanca, Spain
| | - María Álvarez Bardón
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, 24071, León, Spain
| | - Verónica Castilla Gómez de Agüero
- Instituto de Ganadería de Montaña, CSIC-Universidad de León, 24346, Grulleros, León, Spain; Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León, 24071, León, Spain
| | - Ricardo Escarcena
- Departamento de Ciencias Farmacéuticas: Química Farmacéutica, Facultad de Farmacia, Universidad de Salamanca, CIETUS, IBSAL, 37007, Salamanca, Spain
| | - José Luis López-Pérez
- Departamento de Ciencias Farmacéuticas: Química Farmacéutica, Facultad de Farmacia, Universidad de Salamanca, CIETUS, IBSAL, 37007, Salamanca, Spain; Facultad de Medicina, Universidad de Panamá, Panamá, R. de Panamá
| | - Francisco A Rojo-Vázquez
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León, 24071, León, Spain
| | - Arturo San Feliciano
- Departamento de Ciencias Farmacéuticas: Química Farmacéutica, Facultad de Farmacia, Universidad de Salamanca, CIETUS, IBSAL, 37007, Salamanca, Spain; Programa de Pós-graduaçao em Ciências Farmacêuticas, Universida de do Vale do Itajaí, UNIVALI, Itajaí, SC, Brazil
| | - Esther Del Olmo
- Departamento de Ciencias Farmacéuticas: Química Farmacéutica, Facultad de Farmacia, Universidad de Salamanca, CIETUS, IBSAL, 37007, Salamanca, Spain.
| | - Rafael Balaña-Fouce
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, 24071, León, Spain.
| | - María Martínez-Valladares
- Instituto de Ganadería de Montaña, CSIC-Universidad de León, 24346, Grulleros, León, Spain; Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León, 24071, León, Spain.
| |
Collapse
|
3
|
Yang NY, Tao WW, Duan JA. Four new long-chain aliphatics from the feces of Trogopterus xanthipes. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2009; 11:1032-1039. [PMID: 20183273 DOI: 10.1080/10286020903352518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Chemical investigation of Trogopterus feces has led to the isolation of four new long-chain aliphatics, including two new fatty alcohols, 8,15-nonacosanediol (1) and 6,13-nonacosanediol (2), one new fatty acid ester, dihexyl 7,7'-oxydiheptanoate (3), and one new ceramide, (2R)-2-hydroxy-N-[(2S,3S,4R,11E)-1,3,4-trihydroxydocos-11-en-2-yl]heneicosanamide (4). Their structures were elucidated by means of chemical and extensive spectroscopic analysis. Compound 3 exhibited moderate activity of antithrombin in vitro.
Collapse
Affiliation(s)
- Nian-Yun Yang
- Jiangsu Key Laboratory for TCM Formulae Research, Nanjing University of Traditional Chinese Medicine, Nanjing, China
| | | | | |
Collapse
|
5
|
Xynogalas P, Kanapitsas A, Constantinou-Kokotou V, Pissis P, Viras K. Phase transitions in crystals of racemic long chain 2-amino alcohols. Chem Phys Lipids 2005; 135:83-92. [PMID: 15854627 DOI: 10.1016/j.chemphyslip.2005.02.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2004] [Accepted: 02/03/2005] [Indexed: 11/20/2022]
Abstract
Various techniques, namely differential scanning calorimetry, optical microscopy, dielectric and Raman spectroscopy, all covering a wide range of temperatures, were used to study the thermodynamically stable phases and molecular mobility of crystals of long chain 2-amino alcohols. The results showed that two different crystal forms are present in each sample. The temperature behaviour of the phases is studied in details.
Collapse
Affiliation(s)
- Pantelis Xynogalas
- National and Kapodistrian University of Athens, Chemistry Department, Laboratory of Physical Chemistry, Panepistimiopolis, Athens 157 71, Greece
| | | | | | | | | |
Collapse
|
6
|
Abstract
A method for the synthesis of long chain diamines and tetramines starting from natural α-amino acids is reported. Diamines and tetramines were prepared through the Wittig olefination reaction of N-protected amino aldehydes obtained from phenylalanine and lysine. A 1,2,17,18-tetramine was synthesized using (2S)-1-azido-2-[bis(tert-butoxycarbonyl)-amino]-5-oxopentane as key-intermediate compound.
Collapse
|
7
|
Abstract
A convenient four-step method for the preparation of the lipophilic vicinal diamine 1,2-diamino-1-phenylheptane is described. Condensation involving octan-2-one, benzaldehyde and ammonia is reported. Regioselective Schmidt rearrangement of 2,6-diphenyl-3-pentyl-piperidin-4-one (1) to 2,7-diphenyl-3-pentyl hexahydrodiazapin-5-one (3) is presented. Hydrolysis of 2,7-diphenyl-3-pentyl hexahydrodiazapin-5-one to 1,2-diamino-1-phenylheptane (4) is also reported for the first time.
Collapse
Affiliation(s)
- S. Thennarasu
- Author to whom correspondence should be addressed; e-mail:
| | | |
Collapse
|
8
|
Markidis T, Kokotos G. Synthesis of enantiopure omega-functionalized C15 alpha-amino carboxylates. J Org Chem 2002; 67:1685-8. [PMID: 11871904 DOI: 10.1021/jo015768w] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient route for the synthesis of enantiopure omega-hydroxy, omega-carboxy, omega-oxo, and omega-amino alpha-amino acids and bis-alpha-amino acids was developed. The synthesis of omega-trityloxy delta,epsilon-unsaturated alpha-amino acids was based on the Wittig reaction of methyl (2S)-2-[bis(tert-butoxycarbonyl)amino]-5-oxopentanoate with omega-trityloxy alkylidene triphenylphosphoranes. After hydrogenation, the omega-hydroxy alpha-amino acid was used as starting material for the synthesis of other omega-functionalized alpha-amino acids. The length of the side chain of alpha-amino acids or bis-alpha-amino acids depends on the starting alkanediol or dibromide used to prepare the phosphoranes.
Collapse
Affiliation(s)
- Theodoros Markidis
- Laboratory of Organic Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Athens 15771, Greece
| | | |
Collapse
|
10
|
Abstract
An efficient synthesis of (S)-alpha-amino oleic acid was developed. The fully protected FA derivative was obtained in four steps starting from methyl (2S)-2-[bis(tert-butoxycarbonyl)amino]-5-oxopentanoate. These steps are (i) olefination of the starting aldehyde with the appropriate phosphonate anion, (ii) hydrogenation of the double bonds, (iii) controlled reduction of omega-ethyl ester to an aldehyde in the presence of alpha-methyl ester, and (iv) a Wittig reaction of the latter aldehyde with the suitable ylide. Free alpha-amino oleic acid was prepared after deprotection of the amino group followed by saponification in a total yield of 24%. N-tert-Butoxycarbonyl-protected amino oleic acid and the corresponding amino alcohol were prepared in high yield. The structures of the products have been established by various spectroscopic techniques.
Collapse
|