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Fan XZ, Song JQ, Zhang LJ, Wang R, Liu T, Bai WJ, Kong XQ, Huang YS, Liang H, Liao HB. Picrachinentins A-F, 14-Membered Cyclopeptide Alkaloid-Type Burpitides with Uncommon N-Terminal Modifications from Picrasma chinensis and Their Neuroprotective Activity. Org Lett 2024. [PMID: 38787765 DOI: 10.1021/acs.orglett.4c01390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
Picrachinentins A-F (1-6, respectively), six novel cyclopeptide alkaloid-type burpitides (CPABs), were isolated and fully elucidated from the EtOH extract of the stems and leaves of Picrasma chinensis. Structurally, compounds 1-6 have a 14-membered paracyclophane ring system that was closed through an ether bond between the β-hydroxy amino acid and tyrosine and modified with a 4,5-methylenedioxybenzoyloxy (MDBz, 3 and 5) or hexanoyl (Hexa, 1, 2, 4, and 6) group at the N-terminus. Interestingly, this is the first report on the isolation and characterization of CPABs from plants of the Simaroubaceae family. In addition, all compounds showed a neuroprotective effect against H2O2-damaged SH-SY5Y cells. Compound 1 was further investigated for its neuroprotective activities using a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced Parkinson's disease animal model, and it dramatically improved MPTP-impaired motor behavioral performance. Biochemical analysis revealed compound 1 restored the tyrosine hydroxylase expression in the striatum of the MPTP-damaged mouse brain, which demonstrates its protective effect on dopaminergic neurons.
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Affiliation(s)
- Xian-Zhe Fan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jia-Qi Song
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Li-Jun Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Rong Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Ting Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Wen-Jing Bai
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Xiang-Qian Kong
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Ya-Si Huang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, China
| | - Hong Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Hai-Bing Liao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
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Kramarova EP, Lyakhmun DN, Tarasenko DV, Borisevich SS, Khamitov EM, Yusupova AR, Korlyukov AA, Romanenko AR, Shmigol TA, Bylikin SY, Baukov YI, Negrebetsky VV. Reaction of Picolinamides with Ketones Producing a New Type of Heterocyclic Salts with an Imidazolidin-4-One Ring. Molecules 2023; 29:206. [PMID: 38202789 PMCID: PMC10780162 DOI: 10.3390/molecules29010206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
Reactions of picolinamides with 1,3-propanesultone in methanol followed by the treatment with ketones led to a series of previously unknown chemical transformations, yielding first pyridinium salts (2a-f), with a protonated endocyclic nitrogen atom, and then heterocyclic salts (3a-j) containing an imidazolidin-4-one ring. The structures of intermediate and final products were determined by IR and 1H, 13C NMR spectroscopy, and X-ray study. The effects of the ketone and alcohol structures on the product yield were studied by quantum-chemical calculations. The stability of salts 3a-j towards hydrolysis and alcoholysis makes them excellent candidates for the search for new types of biologically active compounds.
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Affiliation(s)
- Eugenia P. Kramarova
- Institute of Pharmacy and Medical Chemistry, Pirogov Russian National Research Medical University, Ostrovityanov St., Bl. 1, 117997 Moscow, Russia; (E.P.K.); (D.N.L.); (D.V.T.); (A.A.K.); (T.A.S.); (Y.I.B.)
| | - Dmitry N. Lyakhmun
- Institute of Pharmacy and Medical Chemistry, Pirogov Russian National Research Medical University, Ostrovityanov St., Bl. 1, 117997 Moscow, Russia; (E.P.K.); (D.N.L.); (D.V.T.); (A.A.K.); (T.A.S.); (Y.I.B.)
| | - Dmitry V. Tarasenko
- Institute of Pharmacy and Medical Chemistry, Pirogov Russian National Research Medical University, Ostrovityanov St., Bl. 1, 117997 Moscow, Russia; (E.P.K.); (D.N.L.); (D.V.T.); (A.A.K.); (T.A.S.); (Y.I.B.)
| | - Sophia S. Borisevich
- Ufa Institute of Chemistry, Oktyabrya Aven., 71, 450054 Ufa, Russia; (S.S.B.); (E.M.K.); (A.R.Y.)
| | - Edward M. Khamitov
- Ufa Institute of Chemistry, Oktyabrya Aven., 71, 450054 Ufa, Russia; (S.S.B.); (E.M.K.); (A.R.Y.)
| | - Alfia R. Yusupova
- Ufa Institute of Chemistry, Oktyabrya Aven., 71, 450054 Ufa, Russia; (S.S.B.); (E.M.K.); (A.R.Y.)
| | - Alexander A. Korlyukov
- Institute of Pharmacy and Medical Chemistry, Pirogov Russian National Research Medical University, Ostrovityanov St., Bl. 1, 117997 Moscow, Russia; (E.P.K.); (D.N.L.); (D.V.T.); (A.A.K.); (T.A.S.); (Y.I.B.)
- A.N.Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St. 28, Bl. 1, 119334 Moscow, Russia;
| | - Alexander R. Romanenko
- A.N.Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St. 28, Bl. 1, 119334 Moscow, Russia;
- D.I. Mendeleev Russian University of Chemical Technology, Miusskaya Sq., 9, 125047 Moscow, Russia
| | - Tatiana A. Shmigol
- Institute of Pharmacy and Medical Chemistry, Pirogov Russian National Research Medical University, Ostrovityanov St., Bl. 1, 117997 Moscow, Russia; (E.P.K.); (D.N.L.); (D.V.T.); (A.A.K.); (T.A.S.); (Y.I.B.)
| | | | - Yuri I. Baukov
- Institute of Pharmacy and Medical Chemistry, Pirogov Russian National Research Medical University, Ostrovityanov St., Bl. 1, 117997 Moscow, Russia; (E.P.K.); (D.N.L.); (D.V.T.); (A.A.K.); (T.A.S.); (Y.I.B.)
| | - Vadim V. Negrebetsky
- Institute of Pharmacy and Medical Chemistry, Pirogov Russian National Research Medical University, Ostrovityanov St., Bl. 1, 117997 Moscow, Russia; (E.P.K.); (D.N.L.); (D.V.T.); (A.A.K.); (T.A.S.); (Y.I.B.)
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Pérez-Bonilla M, Sánchez-Hidalgo M, González I, Oves-Costales D, Martín J, Murillo-Alba J, Tormo JR, Cho A, Byun SY, No JH, Shum D, Ioset JR, Genilloud O, Reyes F. Madurastatins with Imidazolidinone Rings: Natural Products or Side-Reaction Products from Extraction Solvents? Int J Mol Sci 2023; 25:301. [PMID: 38203471 PMCID: PMC10779116 DOI: 10.3390/ijms25010301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/21/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
Madurastatins are a group of pentapeptides containing an oxazoline moiety, and, in a few cases, an imidazolidinone ring as an additional structural feature. In our search for new potential antiparasitic metabolites from natural sources, we studied the acetone extracts from a culture of Actinomadura sp. CA-135719. The LC/HRMS analysis of this extract identified the presence of the known madurastatins C1 (1), D1 (4), and D2 (5) together with additional members of the family that were identified as the new madurastatins H2 (2) and 33-epi-D1 (3) after isolation and spectroscopic analysis. The planar structures of the new compounds were established by HRMS, ESI-qTOF-MS/MS, and 1D and 2D NMR data, and their absolute configuration was proposed using Marfey's and bioinformatic analyses of the biosynthetic gene cluster (BGC). A revision of the absolute configuration of madurastatins D1 and D2 is proposed. Additionally, madurastatins containing imidazolidinone rings are proved to be artifacts originating during acetone extraction of the bacterial cultures.
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Affiliation(s)
- Mercedes Pérez-Bonilla
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Marina Sánchez-Hidalgo
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Ignacio González
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Daniel Oves-Costales
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Jesús Martín
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - José Murillo-Alba
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - José R. Tormo
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Ahreum Cho
- Institut Pasteur Korea, 16, Daewangpangyo-ro 712 beon-gil, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Republic of Korea; (A.C.); (S.-Y.B.); (J.-H.N.); (D.S.)
| | - Soo-Young Byun
- Institut Pasteur Korea, 16, Daewangpangyo-ro 712 beon-gil, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Republic of Korea; (A.C.); (S.-Y.B.); (J.-H.N.); (D.S.)
| | - Joo-Hwan No
- Institut Pasteur Korea, 16, Daewangpangyo-ro 712 beon-gil, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Republic of Korea; (A.C.); (S.-Y.B.); (J.-H.N.); (D.S.)
| | - David Shum
- Institut Pasteur Korea, 16, Daewangpangyo-ro 712 beon-gil, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Republic of Korea; (A.C.); (S.-Y.B.); (J.-H.N.); (D.S.)
| | - Jean-Robert Ioset
- Drugs for Neglected Diseases Initiative, 15 Chemin Camille-Vidart, 1202 Geneva, Switzerland;
| | - Olga Genilloud
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
| | - Fernando Reyes
- Fundación MEDINA, Avda. del Conocimiento 34, 18016 Granada, Spain; (M.S.-H.); (I.G.); (D.O.-C.); (J.M.); (J.M.-A.); (J.R.T.); (O.G.)
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New Synthesized Tri-Peptide as Inhibitor of Krait (Bungarus Sindanus) Venom Acetylcholinesterase. Int J Pept Res Ther 2022. [DOI: 10.1007/s10989-022-10462-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
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Gehm AZ, Cunha SB, Willis B, Mostardeiro MA, Bastos N, Burrow RA, Caro MS, Dalcol II, Morel AF. New cyclopeptide alkaloid of Condalia buxiolia and the absolute stereochemistry of Condaline A. Fitoterapia 2022; 159:105194. [DOI: 10.1016/j.fitote.2022.105194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 04/07/2022] [Accepted: 04/09/2022] [Indexed: 11/27/2022]
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Wang Y, Joullié MM. Approaches to Cyclophane-Types of Cyclopeptide Alkaloids. CHEM REC 2021; 21:906-923. [PMID: 33656243 DOI: 10.1002/tcr.202100017] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/15/2021] [Indexed: 11/09/2022]
Abstract
The cyclopeptide alkaloids are cyclic depsipeptides incorporating cyclophanes with polyamide units 13-, 14- and 15-membered macrocyclic systems. Although various pharmacological activities have been ascribed to cyclopeptide alkaloids from plants of the Rhamnacea family, these studies have been hampered by their low availability due to the lack of reasonable amounts distributed in nature. Therefore, novel and efficient synthetic approaches should be an important aim, which inspired us to examine how to diversely construct the unique structures of this type of natural products. In this account, several typical strategies are presented in terms of efficient, stereocontrolled and regioselective synthesis of cyclopeptide alkaloids.
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Affiliation(s)
- Yuanhao Wang
- Department of Chemistry, University of Pennsylvania, 231 S. 34th St., Philadelphia, PA 19104, USA
| | - Madeleine M Joullié
- Department of Chemistry, University of Pennsylvania, 231 S. 34th St., Philadelphia, PA 19104, USA
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Bitchi MB, Magid AA, Kabran FA, Yao-Kouassi PA, Harakat D, Morjani H, Tonzibo FZ, Voutquenne-Nazabadioko L. Isolation and structure elucidation of cyclopeptide alkaloids from the leaves of Heisteria parvifolia. PHYTOCHEMISTRY 2019; 167:112081. [PMID: 31404786 DOI: 10.1016/j.phytochem.2019.112081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 07/12/2019] [Accepted: 08/02/2019] [Indexed: 06/10/2023]
Abstract
Heisteria parvifolia Sm. is prescribed in traditional medecine against numerous diseases in Côte d'Ivoire. Due to the shortcoming in scientifical knowledge of use of this species, our investigations revealed five undescribed cyclopeptide alkaloids added to one known derivative namely anorldianine. These compounds were elucidated by 1D and 2D-NMR experiments and comparison with literature data, and confirmed by HR-ESI-MS. Cytotoxic activity evaluation of these compounds against the chronic myeloid leukemia (K565) cell line exhibited an antiproliferative activity with cell growth inhibition from 13% to 46%.
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Affiliation(s)
- Michel Boni Bitchi
- Laboratoire de Chimie Organique Biologique, UFR Sciences des Structures de La Matière et Technologie, Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Cote d'Ivoire; ICMR-UMR CNRS 7312, Equipe Chimie des Substances Naturelles, Campus Sciences, Bât. 18, BP 1039, 51687, Reims, France
| | - Abdulmagid Alabdul Magid
- ICMR-UMR CNRS 7312, Equipe Chimie des Substances Naturelles, Campus Sciences, Bât. 18, BP 1039, 51687, Reims, France.
| | - Faustin Aka Kabran
- Laboratoire de Chimie Organique Biologique, UFR Sciences des Structures de La Matière et Technologie, Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Cote d'Ivoire
| | - Philomène Akoua Yao-Kouassi
- Laboratoire de Chimie Organique Biologique, UFR Sciences des Structures de La Matière et Technologie, Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Cote d'Ivoire
| | - Dominique Harakat
- Service Commun D'Analyses, Institut de Chimie Moléculaire de Reims (ICMR), CNRS UMR 7312, Bat. 18 B.P. 1039, 51687, Reims Cedex 2, France
| | - Hamid Morjani
- BioSpecT EA7506, URCA, Faculté de Pharmacie, SFR CAP Santé, 1, Rue Du Maréchal-Juin, 51096, Reims, France
| | - Félix Zanahi Tonzibo
- Laboratoire de Chimie Organique Biologique, UFR Sciences des Structures de La Matière et Technologie, Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Cote d'Ivoire.
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Dahmer J, do Carmo G, Mostardeiro MA, Neto AT, da Silva UF, Dalcol II, Morel AF. Antibacterial activity of Discaria americana Gillies ex Hook (Rhamnaceae). JOURNAL OF ETHNOPHARMACOLOGY 2019; 239:111635. [PMID: 30543915 DOI: 10.1016/j.jep.2018.12.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/06/2018] [Accepted: 12/08/2018] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGY RELEVANCE Discaria americana Gillies ex Hook (sin. Discaria febrifuga and Discaria longispina) (Rhamnaceae) is a plant native from Rio Grande do Sul (Southern Brazil), Uruguay and Argentine, and has been used in Brazilian traditional medicine as antipyretic agent, and for stomach disorders. In Rio Grande do Sul, Uruguay and Argentine, the roots, in decoction, are used as tonic and febrifuge. Although it is a plant widely used by the population, there are no studies proving this popular use. MATERIAL AND METHODS The crude neutral methanol extract, and pure isolated alkaloids, were investigated in vitro for antimicrobial activities against four Gram-positive bacteria: Staphylococcus aureus, Bacillus subtillis, Bacillus cereus, Enterococcus faecium; and five Gram-negative bacteria: Escherichia coli, Enterobacter cloacae, Enterobacter aerogenes, Salmonella enterica serovar Typhimurium and Pseudomonas aeruginosa. RESULTS The crude neutral methanol (CME) extract of the root bark of Discaria americana showed antibacterial activity, ranging from 62.5 to 250 μg mL-1 (MIC), against the tested bacteria. From the fractions obtained from the crude extract, the basic ethereal fraction (BEF) showed to be more effective, with MICs between 31.5 and 125 μg mL-1 against the tested bacteria. The bioassay-guided fractionation of the ethyl ether basic fraction yielded eight cyclopeptide alkaloids: frangufoline (1), frangulanine (2), adouetine Y' (3), discarine A (4) discarine B (5), discarine C (6), discarene C (7) and discarine D (8). When evaluated against the Gram-positive bacteria Enterococcus faecium, discarine B (5) proved to be the most active alkaloid with a MIC/MLC = 0.77/1.55 μg mL-1, near the most active antibacterial agent levofloxacin (MIC/MLC = 0.77/0.77 μg mL-1). Moreover, discarine C (6) was the more active alkaloid against Salmonella enterica serovar Typhimurium, with a MIC/MLC = 3.1/6.2 μg mL-1, the same observed for the antibacterial agent azithromycin. Kinetic measurements of the bacteriolytic activities of discarine B (5) against Enterococcus faecium (Gram-positive), and of discarine C (6) against Salmonella enterica serovar Typhimurium (Gram-negative) were determined by optical density based on real time assay, suggesting that both mode of action are partially bacteriolytic. CONCLUSION In conclusion, five 14-membered cyclopeptide alkaloids isolated from Discaria americana Gillies ex Hook (Rhamnaceae) showed promising antibacterial activity, making this metabolites a class of scientific interest. The good activity presented by the extract and the alkaloids against the Gram-positive bacteria Enterococcus faecium and against the Gram-negative bacteria Salmonella enterica serovar Typhimurium, Enterobacter. aerogenes and Escherichia coli, corroborate with the popular use of this plant for stomach disorders and as antifebrile.
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Affiliation(s)
- Janice Dahmer
- Departamento de Química, Universidade Federal de Santa Maria, Av. Roraima, n° 100, Bairro Camobi, CEP 97105900 Santa Maria, RS, Brazil
| | - Gabriele do Carmo
- Departamento de Química, Universidade Federal de Santa Maria, Av. Roraima, n° 100, Bairro Camobi, CEP 97105900 Santa Maria, RS, Brazil
| | - Marco Aurélio Mostardeiro
- Departamento de Química, Universidade Federal de Santa Maria, Av. Roraima, n° 100, Bairro Camobi, CEP 97105900 Santa Maria, RS, Brazil
| | - Alexandre Tibursky Neto
- Departamento de Química, Universidade Federal de Santa Maria, Av. Roraima, n° 100, Bairro Camobi, CEP 97105900 Santa Maria, RS, Brazil
| | - Ubiratan Flores da Silva
- Departamento de Química, Universidade Federal de Santa Maria, Av. Roraima, n° 100, Bairro Camobi, CEP 97105900 Santa Maria, RS, Brazil
| | - Ionara Irion Dalcol
- Departamento de Química, Universidade Federal de Santa Maria, Av. Roraima, n° 100, Bairro Camobi, CEP 97105900 Santa Maria, RS, Brazil.
| | - Ademir Farias Morel
- Departamento de Química, Universidade Federal de Santa Maria, Av. Roraima, n° 100, Bairro Camobi, CEP 97105900 Santa Maria, RS, Brazil.
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Attorresi CI, Bonifazi EL, Ramírez JA, Gola GF. One-step synthesis of N,N'-substituted 4-imidazolidinones by an isocyanide-based pseudo-five-multicomponent reaction. Org Biomol Chem 2019; 16:8944-8949. [PMID: 30452056 DOI: 10.1039/c8ob02229a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A pseudo-five-multicomponent reaction involving an isocyanide, a primary amine, two molecules of formaldehyde and water is reported, which gives N,N'-substituted 4-imidazolidinones when trifluoroethanol is used as the solvent. The reaction proceeds with good yields and with a wide variety of amines and isocyanides, providing an efficient new entry to these heterocycles. A preliminary study of the reaction mechanism suggests that trifluoroethanol, although acting as the solvent, is directly involved as a reagent in the reaction pathway.
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Affiliation(s)
- Cecilia I Attorresi
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Ciudad Autónoma de Buenos Aires, C1428EGA, Argentina
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McMillan AE, Steven A, Ashworth IW, Mullen AK, Chan LC, Galan Espinosa MR, Pilling MJ, Raw SA, Jones MF. Stereoretentive Etherification of an α-Aryl-β-amino Alcohol Using a Selective Aziridinium Ring Opening for the Synthesis of AZD7594. J Org Chem 2018; 84:4629-4638. [DOI: 10.1021/acs.joc.8b01062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Angus E. McMillan
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Alan Steven
- Global Chemical Development, Pharmaceutical Development, AstraZeneca, Macclesfield Campus, Macclesfield SK10 2NA, U.K
| | - Ian W. Ashworth
- Global Chemical Development, Pharmaceutical Development, AstraZeneca, Macclesfield Campus, Macclesfield SK10 2NA, U.K
| | - Alexander K. Mullen
- Global Chemical Development, Pharmaceutical Development, AstraZeneca, Macclesfield Campus, Macclesfield SK10 2NA, U.K
| | - Lai C. Chan
- Global Chemical Development, Pharmaceutical Development, AstraZeneca, Macclesfield Campus, Macclesfield SK10 2NA, U.K
| | - Maria Rita Galan Espinosa
- Global Chemical Development, Pharmaceutical Development, AstraZeneca, Macclesfield Campus, Macclesfield SK10 2NA, U.K
| | - Michael J. Pilling
- Global Chemical Development, Pharmaceutical Development, AstraZeneca, Macclesfield Campus, Macclesfield SK10 2NA, U.K
| | - Steven A. Raw
- Global Chemical Development, Pharmaceutical Development, AstraZeneca, Macclesfield Campus, Macclesfield SK10 2NA, U.K
| | - Martin F. Jones
- Global Chemical Development, Pharmaceutical Development, AstraZeneca, Macclesfield Campus, Macclesfield SK10 2NA, U.K
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Lomchoey N, Panseeta P, Boonsri P, Apiratikul N, Prabpai S, Kongsaeree P, Suksamrarn S. New bioactive cyclopeptide alkaloids with rare terminal unit from the root bark of Ziziphus cambodiana. RSC Adv 2018; 8:18204-18215. [PMID: 35541146 PMCID: PMC9080573 DOI: 10.1039/c7ra13050c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 05/02/2018] [Indexed: 11/23/2022] Open
Abstract
Six new 14-membered ring cyclopeptide alkaloids, cambodines A–F (1–6), and two known compounds, frangufoline (7) and lotusanine B (8), were isolated from the root bark extract of Ziziphus cambodiana Pierre. Their structures and configurations were established based on 1D and 2D NMR, HRMS, ECD, and X-ray crystallographic data. Compounds 1 and 3 are rare 5(14)-type cyclopeptide alkaloids that possess an imidazolidin-4-one ring in the terminal unit. The cyclopeptides were tested for their in vitro antiplasmodial, antitubercular, and cytotoxic effects against three cancer cell lines. Compound 3 showed significant antiplasmodial activity against the malarial parasite Plasmodium falciparum, with an IC50 value of 6.09 μM. Six new 14-membered ring cyclopeptide alkaloids, cambodines A–F (1–6), and two known compounds, frangufoline (7) and lotusanine B (8), were isolated from the root bark extract of Ziziphus cambodiana Pierre.![]()
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Affiliation(s)
- Natthakaln Lomchoey
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Srinakharinwirot University Bangkok 10110 Thailand
| | - Panomwan Panseeta
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Srinakharinwirot University Bangkok 10110 Thailand .,Department of Chemistry, Chulachomklao Royal Military Academy Nakornnayok 26001 Thailand
| | - Pornthip Boonsri
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Srinakharinwirot University Bangkok 10110 Thailand
| | - Nuttapon Apiratikul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Srinakharinwirot University Bangkok 10110 Thailand
| | - Samran Prabpai
- Department of Chemistry and Center for Excellence in Protein Structure and Function, Faculty of Science, Mahidol University Bangkok 10400 Thailand
| | - Palangpon Kongsaeree
- Department of Chemistry and Center for Excellence in Protein Structure and Function, Faculty of Science, Mahidol University Bangkok 10400 Thailand
| | - Sunit Suksamrarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Srinakharinwirot University Bangkok 10110 Thailand
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