1
|
Anstis DG, Lindsay AC, Söhnel T, Sperry J. Synthesis of the 1,2,4-Thiadiazole Alkaloid Polyaurine B. JOURNAL OF NATURAL PRODUCTS 2020; 83:1721-1724. [PMID: 32297745 DOI: 10.1021/acs.jnatprod.0c00166] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A short synthesis of the natural product polyaurine B is described. The 1,2,4-thiadiazole heterocycle was assembled using a Cu(II)-mediated heterocyclization reaction that forges the N-S bond. The final acylation step to install the methylcarbamate must be conducted under anhydrous, nonbasic conditions to prevent thiadiazole ring opening initiated by attack of hydroxide at C-5.
Collapse
Affiliation(s)
- Daniel G Anstis
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Ashley C Lindsay
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Tilo Söhnel
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| |
Collapse
|
2
|
Casertano M, Imperatore C, Luciano P, Aiello A, Putra MY, Gimmelli R, Ruberti G, Menna M. Chemical Investigation of the Indonesian Tunicate Polycarpa aurata and Evaluation of the Effects Against Schistosoma mansoni of the Novel Alkaloids Polyaurines A and B. Mar Drugs 2019; 17:md17050278. [PMID: 31083316 PMCID: PMC6562961 DOI: 10.3390/md17050278] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 12/20/2022] Open
Abstract
A deep study of the metabolic content of the tunicate Polycarpa aurata, collected from Indonesian coast, afforded the isolation of two novel alkaloids, polyaurines A (1) and B (2), along with two new p-substituted benzoyl derivatives (3 and 4) and four known compounds (5–8). The structural elucidation of the new secondary metabolites was assigned by 1D, 2D NMR, and HRESIMS techniques. Computational studies resulted a useful tool to unambiguously determine in polyaurine B the presence of rarely found 1,2,4-thiadiazole ring. The effects of polyaurines A and B on mammalian cells growth and on the viability of different blood-dwelling Schistosoma mansoni (phylum: Platyhelminthes) stages, as well as egg production, were evaluated. Both compounds resulted not cytotoxic; interestingly some of the eggs produced by polyaurine A-treated adult pairs in vitro are smaller, deformed, and/or fragmented; therefore, polyaurine A could represent an interesting bioactive natural molecule to be further investigated.
Collapse
Affiliation(s)
- Marcello Casertano
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
| | - Concetta Imperatore
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
| | - Paolo Luciano
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
| | - Anna Aiello
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
| | - Masteria Yunovilsa Putra
- Research Center for Oceanography, Indonesian Institute of Sciences, Jl Pasir Putih Raya 1, DKI Jakarta 14430, Indonesia.
| | - Roberto Gimmelli
- Institute of Cell Biology and Neurobiology, National Research Council, Campus A. Buzzati-Traverso, Via E. Ramarini, 32, 00015 Monterotondo (Roma), Italy.
| | - Giovina Ruberti
- Institute of Cell Biology and Neurobiology, National Research Council, Campus A. Buzzati-Traverso, Via E. Ramarini, 32, 00015 Monterotondo (Roma), Italy.
| | - Marialuisa Menna
- The NeaNat Group, Department of Pharmacy, University of Naples "Federico II", Via D. Montesano 49, 80131 Napoli, Italy.
| |
Collapse
|
3
|
Serban G. Future Prospects in the Treatment of Parasitic Diseases: 2-Amino-1,3,4-Thiadiazoles in Leishmaniasis. Molecules 2019; 24:molecules24081557. [PMID: 31010226 PMCID: PMC6514673 DOI: 10.3390/molecules24081557] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 04/14/2019] [Accepted: 04/17/2019] [Indexed: 02/08/2023] Open
Abstract
Neglected tropical diseases affect the lives of a billion people worldwide. Among them, the parasitic infections caused by protozoan parasites of the Trypanosomatidae family have a huge impact on human health. Leishmaniasis, caused by Leishmania spp., is an endemic parasitic disease in over 88 countries and is closely associated with poverty. Although significant advances have been made in the treatment of leishmaniasis over the last decade, currently available chemotherapy is far from satisfactory. The lack of an approved vaccine, effective medication and significant drug resistance worldwide had led to considerable interest in discovering new, inexpensive, efficient and safe antileishmanial agents. 1,3,4-Thiadiazole rings are found in biologically active natural products and medicinally important synthetic compounds. The thiadiazole ring exhibits several specific properties: it is a bioisostere of pyrimidine or benzene rings with prevalence in biologically active compounds; the sulfur atom increases lipophilicity and combined with the mesoionic character of thiadiazoles imparts good oral absorption and good cell permeability, resulting in good bioavailability. This review presents synthetic 2-amino-1,3,4-thiadiazole derivatives with antileishmanial activity. Many reported derivatives can be considered as lead compounds for the synthesis of future agents as an alternative to the treatment of leishmaniasis.
Collapse
Affiliation(s)
- Georgeta Serban
- Pharmaceutical Chemistry Department, Faculty of Medicine and Pharmacy, University of Oradea, 29 Nicolae Jiga, 410028 Oradea, Romania.
| |
Collapse
|
4
|
Davison EK, Hume PA, Sperry J. Total Synthesis of an Isatis indigotica-Derived Alkaloid Using a Biomimetic Thio-Diels–Alder Reaction. Org Lett 2018; 20:3545-3548. [DOI: 10.1021/acs.orglett.8b01321] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Emma K. Davison
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Paul A. Hume
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| |
Collapse
|
5
|
Petkowski JJ, Bains W, Seager S. Natural Products Containing a Nitrogen-Sulfur Bond. JOURNAL OF NATURAL PRODUCTS 2018; 81:423-446. [PMID: 29364663 DOI: 10.1021/acs.jnatprod.7b00921] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Only about 100 natural products are known to contain a nitrogen-sulfur (N-S) bond. This review thoroughly categorizes N-S bond-containing compounds by structural class. Information on biological source, biological activity, and biosynthesis is included, if known. We also review the role of N-S bond functional groups as post-translational modifications of amino acids in proteins and peptides, emphasizing their role in the metabolism of the cell.
Collapse
Affiliation(s)
- Janusz J Petkowski
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - William Bains
- Rufus Scientific , 37 The Moor, Melbourn, Royston, Herts SG8 6ED, U.K
| | - Sara Seager
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Physics, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
6
|
Davison EK, Sperry J. Natural Products with Heteroatom-Rich Ring Systems. JOURNAL OF NATURAL PRODUCTS 2017; 80:3060-3079. [PMID: 29135244 DOI: 10.1021/acs.jnatprod.7b00575] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This review focuses on all known natural products that contain a "heteroatom-rich" ring system, specifically a five-, six- or seven-membered ring that contains three or more heteroatoms. The isolation and biological activity of these natural products is discussed, along with the biosynthetic processes that Nature employs to assemble these rare heterocyclic frameworks.
Collapse
Affiliation(s)
- Emma K Davison
- School of Chemical Sciences, University of Auckland , 23 Symonds Street, Auckland 1142, New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences, University of Auckland , 23 Symonds Street, Auckland 1142, New Zealand
| |
Collapse
|
7
|
Abstract
INTRODUCTION Four isomeric structures of thiadiazole motifs have outstanding pharmacological inhibitory applications are reported in this review. Thiadiazole nucleus is present in several biologically active natural products and commercial drugs. Most of thiadiazoles reported herein are emphasized to have broad spectrum of medicinal activities. Areas covered: This review represents the recent inhibitory activities of thiadiazole isomeric scaffolds and their broad-spectrum biological applications published as full texts during 2010-2016 as well as the patents published during 2005-2016. The inhibition areas covered included anti-inflammatory, antimicrobial, antitumor, antioxidant, antitubercular, antiviral, antileishmanial, anticonvulsant, herbicidal and algicidal activities in addition to enzymes, human platelet aggregation and neuroprotective inhibitors. Expert opinion: This survey revealed very interesting data about the applications of thiadiazoles, where some synthetic or natural thiadiazole derivatives were components of drugs available in the market. Many thiadiazole derivatives can be considered as lead compounds for drug synthesis. The most inhibitory active 1,3,4-thiadiazole compounds are those incorporating secondary alkyl(aryl)amido- and/or benzylthio(mercapto) groups at positions 2 and 5. Several thiadiazole derivatives demonstrated higher antibacterial, antitumor and antiviral activities than the standard drugs. Some thiadiazole derivatives exhibited high selective enzymes inhibitory activities based on the electronic properties of the substituents at positions 2 or 5.
Collapse
Affiliation(s)
- Kamal M Dawood
- a Department of Chemistry, Faculty of Science , Kuwait University , Safat , Kuwait.,b Department of Chemistry, Faculty of Science , Cairo University , Giza , Egypt
| | - Thoraya A Farghaly
- b Department of Chemistry, Faculty of Science , Cairo University , Giza , Egypt.,c Department of Chemistry, Faculty of Applied Science , Umm Al-Qura University , Makkah Almukkarramah , Saudi Arabia
| |
Collapse
|
8
|
Garcia J, Sorrentino J, Diller EJ, Chapman D, Woydziak ZR. A General Method for Nucleophilic Aromatic Substitution of Aryl Fluorides and Chlorides with Dimethylamine using Hydroxide-Assisted Decomposition of N,N-Dimethylforamide. SYNTHETIC COMMUN 2016; 46:475-481. [PMID: 27688484 DOI: 10.1080/00397911.2016.1147051] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A practical and convenient procedure for the nucleophilic aromatic substitution of aryl fluorides and chlorides with dimethylamine was developed using a hydroxide assisted, thermal decomposition of N,N-dimethylforamide. These conditions are tolerant of nitro, nitrile, aldehyde, ketone, and amide groups but will undergo acyl substitution to form amides for methyl esters and acyl chlorides. Isolated yields of the products range from 44 - 98%, with the majority being greater than 70% for seventeen examples.
Collapse
Affiliation(s)
- Juana Garcia
- Department of Physical and Life Sciences, Nevada State College, Henderson, NV 89002
| | - Jacob Sorrentino
- Department of Physical and Life Sciences, Nevada State College, Henderson, NV 89002
| | - Emily J Diller
- Department of Physical and Life Sciences, Nevada State College, Henderson, NV 89002
| | - Daniel Chapman
- Department of Physical and Life Sciences, Nevada State College, Henderson, NV 89002
| | - Zachary R Woydziak
- Department of Physical and Life Sciences, Nevada State College, Henderson, NV 89002
| |
Collapse
|
9
|
Davison EK, Sperry J. Synthesis of the 1,2,4-thiadiazole alkaloids polycarpathiamines A and B. Org Chem Front 2016. [DOI: 10.1039/c5qo00367a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of the 1,2,4-thiadiazole alkaloids polycarpathiamines A and B is described. The heteroaromatic core of the natural products was assembled using a one-pot benzylic oxidation–oxidative heterocyclization process.
Collapse
Affiliation(s)
- Emma K. Davison
- School of Chemical Sciences
- University of Auckland
- Auckland
- New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences
- University of Auckland
- Auckland
- New Zealand
| |
Collapse
|
10
|
Design, regioselective synthesis and cytotoxic evaluation of 2-aminoimidazole–quinoline hybrids against cancer and primary endothelial cells. Eur J Med Chem 2014; 87:150-8. [DOI: 10.1016/j.ejmech.2014.09.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 09/14/2014] [Accepted: 09/15/2014] [Indexed: 12/11/2022]
|
11
|
Pham CD, Weber H, Hartmann R, Wray V, Lin W, Lai D, Proksch P. New cytotoxic 1,2,4-thiadiazole alkaloids from the ascidian Polycarpa aurata. Org Lett 2013; 15:2230-3. [PMID: 23582084 DOI: 10.1021/ol400791n] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two new alkaloids, polycarpathiamines A and B (1 and 2), were isolated from the ascidian Polycarpa aurata. Their structures were unambiguously determined by 1D, 2D NMR, and HRESIMS measurements and further confirmed by comparison with a closely related analogue, 3-dimethylamino-5-benzoyl-1,2,4-thiadiazole (4), that was prepared by chemical synthesis. Compounds 1 and 2 both feature an uncommon 1,2,4-thiadiazole ring whose biosynthetic origin is proposed. Compound 1 showed significant cytotoxic activity against L5178Y murine lymphoma cells (IC50 0.41 μM).
Collapse
Affiliation(s)
- Cong-Dat Pham
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine University, 40225 Düsseldorf, Germany
| | | | | | | | | | | | | |
Collapse
|
12
|
Chen M, Lin S, Li L, Zhu C, Wang X, Wang Y, Jiang B, Wang S, Li Y, Jiang J, Shi J. Enantiomers of an Indole Alkaloid Containing Unusual Dihydrothiopyran and 1,2,4-Thiadiazole Rings from the Root of Isatis indigotica. Org Lett 2012; 14:5668-71. [DOI: 10.1021/ol302660t] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Minghua Chen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| | - Sheng Lin
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| | - Li Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| | - Chenggen Zhu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| | - Xiaoliang Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| | - Yanan Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| | - Bingya Jiang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| | - Sujuan Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| | - Yuhuan Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| | - Jiandong Jiang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| | - Jiangong Shi
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China, and Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People’s Republic of China
| |
Collapse
|
13
|
Kalpana KB, Vishwanathan P, Thayalan K, Menon VP. Protective effect of dendrodoine analog, an aminothiazole derivative against X-radiation induced hepatocellular damage in mice. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2012; 34:832-840. [PMID: 23127424 DOI: 10.1016/j.etap.2012.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 07/31/2012] [Accepted: 09/04/2012] [Indexed: 06/01/2023]
Abstract
This study evaluated the radioprotective effect of dendrodoine analog (DA) against radiation-induced damage in the liver of mice. The study was divided into two phases; in the first phase, the effective concentration of DA was fixed by performing a survival study. In the second phase, the fixed effective concentration of DA was orally administered to mice to evaluate its radioprotective efficacy by performing various assays. The results indicated that the radiation-induced decrease in the activities of antioxidant enzymes, increase in thiobarbituric acid reactive substances (TBARS) and comet parameters were altered by pre-administration with the effective concentration of DA which restored the antioxidant status to near normal and decreased the level of the TBARS and comet parameters. The histopathological examinations further confirmed the hepatoprotective effect of DA in mice. Thus, the current study showed DA to be an effective radioprotector against radiation induced damage in the liver of mice.
Collapse
Affiliation(s)
- K B Kalpana
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
| | | | | | | |
Collapse
|
14
|
Eligeti R, Saini R, Dharavath N. Design, synthesis, and antimicrobial activity of novel spiroisoxazolo[2,3-b][1,2,4]thiadiazole-2,2′-thiazolidine- 4′-ones and spiroisoxazolo[2,3-b][1,2,4]oxadiazole-2, 2′-thiazolidine-4′-ones. J Sulphur Chem 2012. [DOI: 10.1080/17415993.2012.703671] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
15
|
Frank P, Caruso F, Caponetti E. Ancient wood of the Acqualadrone rostrum: materials history through gas chromatography/mass spectrometry and sulfur X-ray absorption spectroscopy. Anal Chem 2012; 84:4419-28. [PMID: 22545724 PMCID: PMC3353731 DOI: 10.1021/ac3001258] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In 2008 the rostrum from an ancient warship was recovered from the Mediterranean near Acqualadrone, Sicily. To establish its provenance and condition, samples of black and brown rostrum wood were examined using sulfur K-edge X-ray absorption spectroscopy (XAS) and gas chromatography/mass spectrometry (GC/MS). GC/MS of pyrolytic volatiles yielded only guaiacyl derivatives, indicating construction from pinewood. A derivatized extract of black wood yielded forms of abietic acid and sandaracopimaric acid consistent with pine pitch waterproofing. Numerical fits to the sulfur K-edge XAS spectra showed that about 65% of the endogenous sulfur consisted of thiols and disulfides. Elemental sulfur was about 2% and 7% in black and brown wood, respectively, while pyritic sulfur was about 12% and 6%. About 2% of the sulfur in both wood types was modeled as trimethylsulfonium, possibly reflecting biogenic (dimethylsulfonio)propionate. High-valent sulfur was exclusively represented by sulfate esters, consistent with bacterial sulfotransferase activity. Traces of chloride were detected, but no free sulfate ion. In summary, the rostrum was manufactured of pine wood and subsequently waterproofed with pine pitch. The subsequent 2300 years included battle, foundering, and marine burial followed by anoxia, bacterial colonization, sulfate reduction, and mobilization of transition metals, which produced pyrite and copious appended sulfur functionality.
Collapse
Affiliation(s)
- Patrick Frank
- Department of Chemistry, Stanford University, Stanford, California 94305, United States.
| | | | | |
Collapse
|
16
|
Kalpana K, Devipriya N, Thayalan K, Menon VP. Protection against X-ray radiation-induced cellular damage of human peripheral blood lymphocytes by an aminothiazole derivative of dendrodoine. Chem Biol Interact 2010; 186:267-74. [DOI: 10.1016/j.cbi.2010.05.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Revised: 04/30/2010] [Accepted: 05/04/2010] [Indexed: 11/29/2022]
|
17
|
Reji TFAF, Rajasekharan KN. Synthesis of 2-[2,4-diaminothiazol-5-oyl]benzothiazoles. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.387] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
18
|
Blunt JW, Copp BR, Munro MHG, Northcote PT, Prinsep MR. Marine natural products. Nat Prod Rep 2010; 27:165-237. [DOI: 10.1039/b906091j] [Citation(s) in RCA: 322] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
19
|
Wehn PM, Harrington PE, Eksterowicz JE. Facile Synthesis of Substituted 5-Amino- and 3-Amino-1,2,4-Thiadiazoles from a Common Precursor. Org Lett 2009; 11:5666-9. [DOI: 10.1021/ol902371y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paul M. Wehn
- Department of Medicinal Chemistry, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, California 94080, Department of Medicinal Chemistry, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, and Department of Molecular Structure, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, California 94080
| | - Paul E. Harrington
- Department of Medicinal Chemistry, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, California 94080, Department of Medicinal Chemistry, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, and Department of Molecular Structure, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, California 94080
| | - John E. Eksterowicz
- Department of Medicinal Chemistry, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, California 94080, Department of Medicinal Chemistry, Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, and Department of Molecular Structure, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, California 94080
| |
Collapse
|
20
|
Synthesis and the influence of intramolecular H-bonding in NMR spectra of novel analogs of dendrodoine: Diaminothiazoloylbenzothiazoles. JOURNAL OF SAUDI CHEMICAL SOCIETY 2009. [DOI: 10.1016/j.jscs.2009.10.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
21
|
Abbs Fen Reji TF, Rajasekharan KN. Synthesis of [2,4-bis(arylamino)thiazol-5-yl](1-methyl-1H-benzimidazol-2-yl)methanones. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
22
|
Hupp CD, Tepe JJ. 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide Hydrochloride-Mediated Oxazole Rearrangement: Gaining Access to a Unique Marine Alkaloid Scaffold. J Org Chem 2009; 74:3406-13. [DOI: 10.1021/jo900264p] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher D. Hupp
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
| | - Jetze J. Tepe
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
| |
Collapse
|
23
|
Hupp CD, Tepe JJ. Total Synthesis of a Marine Alkaloid from the Tunicate Dendrodoa grossularia. Org Lett 2008; 10:3737-9. [DOI: 10.1021/ol801375k] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christopher D. Hupp
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
| | - Jetze J. Tepe
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
| |
Collapse
|
24
|
De S, Adhikari S, Tilak-Jain J, Menon V, Devasagayam T. Antioxidant activity of an aminothiazole compound: Possible mechanisms. Chem Biol Interact 2008; 173:215-23. [DOI: 10.1016/j.cbi.2008.03.011] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2007] [Revised: 03/18/2008] [Accepted: 03/18/2008] [Indexed: 11/28/2022]
|
25
|
Kalpana KB, Srinivasan M, Menon VP. Antioxidant potential of aminothiazole derivative and its protective effect on H(2)O(2)-induced oxidative damage on pBR322 DNA and RBC cellular membrane. Mol Cell Biochem 2008; 314:95-103. [PMID: 18437532 DOI: 10.1007/s11010-008-9769-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Accepted: 04/07/2008] [Indexed: 10/22/2022]
Abstract
The present work was carried out to evaluate the antioxidant and free radical scavenging activity of aminothiazole derivative by performing various in vitro assays; to study its protective effect on H(2)O(2)-induced oxidative damage on pBR322 DNA and on RBC cellular membrane. The in vitro assays were performed with different concentrations of aminothiazole derivative (6.15, 12.29, 18.44, 24.59, and 30.73 microM) and the results were compared with standards like ascorbic acid and trolox. Our results clearly indicated that aminothiazole derivative at a dose of 18.44 microM exhibited radical scavenging activity greater than that of ascorbic acid and trolox. The DNA protective effect on pBR322 DNA showed that there was a concentration-dependent inhibition of the disappearance of supercoiled (ccc) form of DNA on incubation with 30 mM H(2)O(2) in the presence of different concentrations of aminothiazole derivative. Thus our compound at 1.5 mM prevents the conversion from supercoiled (ccc) form to open circular form (oc) form of pBR322 DNA. Pretreatment with aminothiazole derivative at a dose of 18.44 microM prevents membrane damage and exhibits an IC(50) value, which is the concentration of the sample required to inhibit 50% of the radical formed greater than that of the standards (ascorbic acid and trolox). Thus our compound of interest aminothiazole derivative exhibits antioxidant and free radical scavenging properties greater than that of standards like ascorbic acid and trolox and thereby protects pBR322 DNA and RBC cellular membrane from free radical induced oxidative damage.
Collapse
Affiliation(s)
- K B Kalpana
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalai Nagar, Tamil Nadu, India
| | | | | |
Collapse
|
26
|
|
27
|
Aruna K, Rukkumani R, Suresh P, Menon VP. Expression pattern of matrix metalloproteinases in alcohol- and thermally oxidized sunflower oil-induced toxicity: protective role of an aminothiazole derivative. J Med Food 2005; 8:242-5. [PMID: 16117618 DOI: 10.1089/jmf.2005.8.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The matrix metalloproteinases (MMPs) are a family of secreted and membrane-bound zinc endopeptidases. Collectively, these enzymes can degrade all of the components of the extracellular matrix including collagen, fibronectin, laminin, and basement membrane glycoproteins. Regulation in expression and activation of proteinases is one of the most important mechanisms in organ morphogenesis. Fibrosis is a dynamic pathological process with a net accumulation of extracellular matrix proteins. In the present communication, we have investigated the changes that occur in the activity of liver MMPs in normal and in pathological conditions. The activity of MMPs was increased in thermally oxidized sunflower oiland alcohol-treated groups, whereas the activity was decreased in the thermally oxidized oil + alcohol-fed group when compared with the normal control group. The activity was positively modulated when dendrodoine analogue [4-amino-5-benzoyl- 2(4-methoxyphenylamino)thiazole] was administered along with ethanol and thermally oxidized oil, which indicates the protective effect of this drug.
Collapse
Affiliation(s)
- Kode Aruna
- Department of Biochemistry, Annamalai University, Annamalainagar, Tamil Nadu, India
| | | | | | | |
Collapse
|
28
|
Kode A, Rajagopalan R, Penumathsa SV, Menon VP. Influence of a thiazole derivative on ethanol and thermally oxidized sunflower oil-induced oxidative stress. Fundam Clin Pharmacol 2004; 18:565-71. [PMID: 15482378 DOI: 10.1111/j.1472-8206.2004.00274.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The present work describes the protective influence of the dendrodoine analogue (DA) [4-amino-5-benzoyl-2-(4-methoxy phenylamino) thiazole] on thermally oxidized sunflower oil and ethanol-induced oxidative stress. Ethanol was fed to animals at a level of 20% [(7.9 g/kg body weight (bw)] and thermally oxidized sunflower oil at a level of 15% (15 mL/100 g feed). Hepatotoxicity was assessed by measuring the activity of plasma aspartate transaminase (AST), alkaline phosphatase (ALP) and gamma-glutamyl transferase (GGT), which were elevated in thermally oxidized oil, and ethanol fed rats when compared with normal control rats. Tissue damage was associated with increased lipid peroxidation and disruption in the antioxidant defence mechanism in thermally oxidized oil- and ethanol-fed groups when compared with normal control group. The activity of liver marker enzymes (AST, ALP and GGT) and the level of lipid peroxidation decreased when DA was administered along with ethanol and thermally oxidized oil. The antioxidant status was near normal in DA-administered groups. Thus we propose that DA exerts antioxidant properties by modulating the activity of hepatic marker enzymes, level of lipid peroxidation and antioxidant status.
Collapse
Affiliation(s)
- Aruna Kode
- Department of Biochemistry, Faculty of Science, Annamalai University, Annamalainagar - 608 002, Tamil Nadu, India
| | | | | | | |
Collapse
|
29
|
Prinsep MR. Sulfur-Containing Natural Products from Marine Invertebrates. BIOACTIVE NATURAL PRODUCTS (PART I) 2003. [DOI: 10.1016/s1572-5995(03)80151-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
30
|
Chithralekha Devi SK, Rajasekharan KN. SYNTHESIS OF 2,4-DIAMINO-5- (FUR-2-OYL), (THIEN-2-OYL), AND (PYRID-2-OYL)THIAZOLES. SYNTHETIC COMMUN 2002. [DOI: 10.1081/scc-120004141] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
31
|
Ciminiello P, Dell’Aversano C, Fattorusso E, Forino M, Magno S, Ianaro A, Di Rosa M. Oxazinin-1, -2 and -3 − A Novel Toxic Compound and Its Analogues from the Digestive Glands ofMytilus galloprovincialis. European J Org Chem 2001. [DOI: 10.1002/1099-0690(200101)2001:1<49::aid-ejoc49>3.0.co;2-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
32
|
Bowden BF. Aromatic alkaloids from ascidians. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1572-5995(00)80131-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
|
33
|
Azolides: Structural aspects. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1521-4478(00)80008-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
34
|
Franco LH, Joffé EB, Puricelli L, Tatian M, Seldes AM, Palermo JA. Indole alkaloids from the tunicate Aplidium meridianum. JOURNAL OF NATURAL PRODUCTS 1998; 61:1130-2. [PMID: 9748381 DOI: 10.1021/np970493u] [Citation(s) in RCA: 146] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Five new indole alkaloids, meridianins A-E (1-5), have been isolated from the tunicate Aplidium meridianum, which was collected at a depth of 100 m near the South Georgia Islands, and their structures were elucidated by spectroscopic techniques. Compounds 2-5 showed cytotoxicity toward murine tumor cell lines.
Collapse
Affiliation(s)
- L H Franco
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, (1428) Buenos Aires, Argentina
| | | | | | | | | | | |
Collapse
|
35
|
Bergmann T, Schories D, Steffan B. Alboinon, an oxadiazinone alkaloid from the ascidian Dendrodoa grossularia. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(96)01168-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
36
|
Grossularine-1 and grossularine-2, cytotoxic α-carbolines from the tunicate: Dendrodoa grossularia. Tetrahedron 1989. [DOI: 10.1016/s0040-4020(01)81023-1] [Citation(s) in RCA: 119] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
37
|
The Search for Antiviral and Anticancer Compounds from Marine Organisms. BIOORGANIC MARINE CHEMISTRY 1987. [DOI: 10.1007/978-3-642-72726-9_4] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
|
38
|
Methods for the synthesis of azoles containing indole substituents (review). Chem Heterocycl Compd (N Y) 1986. [DOI: 10.1007/bf00519929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
39
|
|
40
|
Krebs HC. Recent developments in the field of marine natural products with emphasis on biologically active compounds. FORTSCHRITTE DER CHEMIE ORGANISCHER NATURSTOFFE = PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS. PROGRES DANS LA CHIMIE DES SUBSTANCES ORGANIQUES NATURELLES 1986; 49:151-363. [PMID: 2877925 DOI: 10.1007/978-3-7091-8846-0_3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
41
|
Moquin C, Guyot M. Grossularine, a novel indole derivative from the marine tunicate, dendrodoa grossularia. Tetrahedron Lett 1984. [DOI: 10.1016/s0040-4039(01)91115-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
42
|
Hogan I, Sainsbury M. The synthesis of dendrodoine, 5-[3-(N,N-dimethylamino- 1,2,4-thiadiazolyl]-3-indolylmethanone, a metabolite of the marine tunicate dendroda grossular. Tetrahedron 1984. [DOI: 10.1016/s0040-4020(01)91096-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|