1
|
Doğan S, Mutlu Balcı C, Beşli S. Dibenzylamine substituted cyclotetraphosphazenes: Synthesis, characterization and their stereogenic properties. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.06.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
2
|
|
3
|
Cyclotriphosphazenes having stereogenic phosphorus atoms: Synthesis, characterization and their stereogenic properties. Polyhedron 2014. [DOI: 10.1016/j.poly.2013.12.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
4
|
Ün ŞŞ, Özcan E, Uslu A, Yuksel F, Kılıç A. Cyclotriphosphazene derivatives with three different chiral centres: Synthesis, characterization and investigation of their stereogenic properties. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.06.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
5
|
Kajiyama K, Suzuki M, Kojima M, Setone Y. Stereoselective synthesis of trans N/O dispirocyclic cyclotriphosphazenes based on the steric demands of the constrained 2-pyridyl group. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.07.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
6
|
Elmas G, Okumuş A, Kılıç Z, Hökelek T, Açık L, Dal H, Ramazanoğlu N, Koç LY. Phosphorus-nitrogen compounds. Part 24. Syntheses, crystal structures, spectroscopic and stereogenic properties, biological activities, and DNA interactions of novel spiro-ansa-spiro- and ansa-spiro-ansa-cyclotetraphosphazenes. Inorg Chem 2012; 51:12841-56. [PMID: 23163803 DOI: 10.1021/ic3017134] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions of octachlorocyclotetraphosphazene, N(4)P(4)Cl(8), with N(2)O(2) donor-type aminopodands (1a, 1b, 1g, and 1h) afforded two kinds of derivatives, namely, spiro-ansa-spiro (sas) (2a, 2b, 2g, and 2h) and ansa-spiro-ansa (asa) (3a and 3b) phosphazenes. The partly substituted sas phosphazenes (2a and 2b) reacted with excess pyrrolidine and morpholine in tetrahydrofuran to produce the tetrapyrrolidino (2c and 2d) and morpholino (2e and 2f) derivatives. The reactions of the asa phosphazenes (3a and 3b) with excess pyrrolidine and morpholine produced gem-2-trans-6-dichloropyrrolidinophosphazenes (3c and 3d) and -morpholinophosphazenes (3e and 3f). However, the fully substituted products were not obtained in these solvents. In addition, the expected fully substituted compound was not obtained from the reaction of 3a with excess pyrrolidine by standard or microwave-assisted methods. The reaction of the long-chain starting compound (1g) with N(4)P(4)Cl(8) gave sas (2g) and the interesting 2,6-ansa-spiro-bicyclo product (bicyclo-2,6-as; 4g), while the reaction of 1h with N(4)P(4)Cl(8) yielded only sas (2h). The structural investigations of the compounds were verified by elemental analyses, mass spectrometry, Fourier transform infrared, and DEPT, HSQC, HMBC, (1)H, (13)C, and (31)P NMR techniques. The crystal structures of 2b, 3a, 3b, 3e, and 4g were determined by X-ray crystallography. Compounds 2a-2h, 3a-3f, and 4g had two stereogenic P atoms. Compound 3b had one enantiomer according to the Flack parameter, and 3f was a racemic mixture, as shown by chiral high-performance liquid chromatography and chiral-solvating-agent, (R)-(+)-2,2,2-trifluoro-1-(9'-anthryl)ethanol, experiments. Furthermore, compounds 2a, 2c, and 2d exhibited weak antibacterial activity against (G+) bacterium, and 3c and 3d displayed moderate antifungal activity against Candida tropicalis. Gel electrophoresis data demonstrated that 2e, 3c, and 3e promoted the formation of DNA cleavage. The prevention of BamHI digestion by 2a-2f and 3a-3f, except 2b and 2e, disclosed binding with GG nucleotides in DNA.
Collapse
Affiliation(s)
- Gamze Elmas
- Department of Chemistry, Ankara University, 06100 Ankara, Turkey
| | | | | | | | | | | | | | | |
Collapse
|
7
|
The investigation of stereogenic properties of cyclotriphosphazene derivatives with two different chiral centres. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.03.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
8
|
Işiklan M, Asmafiliz N, Ozalp EE, Ilter EE, Kiliç Z, Coşut B, Yeşilot S, Kiliç A, Oztürk A, Hökelek T, Bilir LYK, Açik L, Akyüz E. Phosphorus-nitrogen compounds. 21. Syntheses, structural investigations, biological activities, and DNA interactions of new N/O spirocyclic phosphazene derivatives. The NMR behaviors of chiral phosphazenes with stereogenic centers upon the addition of chiral solvating agents. Inorg Chem 2010; 49:7057-71. [PMID: 20583756 DOI: 10.1021/ic100781v] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of hexachlorocyclotriphosphazatriene, N(3)P(3)Cl(6), with N/O-donor-type N-alkyl (or aryl)-o-hydroxybenzylamines (1a-1e) produce mono- (2a-2e), di- (3a-3d), and tri- (4a and 4b) spirocyclic phosphazenes. The tetrapyrrolidino monospirocyclic phosphazenes (2f-2i) are prepared from the reactions of partly substituted compounds (2a-2d) with excess pyrrolidine. The dispirodipyrrolidinophosphazenes (3e-3h) and trispirophosphazenes (3i-3k) are obtained from the reactions of trans-dispirophosphazenes with excess pyrrolidine and sodium (3-amino-1-propanoxide), respectively. Compounds 3a-3d have cis and trans geometric isomers. Only the trans isomers of these compounds are isolated. Compounds 3a-3h have two stereogenic P atoms. They are expected to be in cis (meso) and trans (racemic) geometric isomers. In the trans trispiro compounds (3i-3k), there are three stereogenic P atoms. They are expected to be in racemic mixtures. The stereogenic properties of 3a-3k are confirmed by (31)P NMR spectroscopy upon the addition of the chiral solvating agent; (S)-(+)-2,2,2-trifluoro-1-(9'-anthryl)ethanol. The molecular structures of 3i-3k, 4a, and 4b look similar to a propeller, where the chemical environment of one P atom is different from that of others. Additionally, 4a and 4b are also expected to exist as cis-trans-trans and cis-cis-cis geometric isomers, but both of them are found to be in cis-trans-trans geometries. The solid-state structures of 2a, 2e, 2f, 3e, and 3f are determined by X-ray crystallography. The compounds 2f-2i, 3e-3i, and 3k are screened for antibacterial activity against gram-positive and gram-negative bacteria and for antifungal activity against yeast strains. These compounds (except 3f) have shown a strong affinity against most of the bacteria. Minimum inhibitory concentrations (MIC) are determined for 2f-2i, 3e-3i, and 3k. DNA binding and the nature of interaction with pUC18 plasmid DNA are studied. The compounds 2f-2i, 3e-3i, and 3k induce changes on the DNA mobility. The prevention of BamHI and HindIII digestion (except 2g) with compounds indicates that the compounds bind with nucleotides in DNA.
Collapse
Affiliation(s)
- Muhammet Işiklan
- Department of Chemistry, Kirikkale University, Kirikkale, Turkey
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Çoşut B, İbişoğlu H, Kılıç A, Yeşilot S. Synthesis and enantiomeric analysis of cyclotriphosphazene derivatives with one centre of chirality. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.07.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
10
|
Asmafiliz N, Kılıç Z, Öztürk A, Hökelek T, Koç LY, Açık L, Kısa Ö, Albay A, Üstündağ Z, Solak AO. Phosphorus−Nitrogen Compounds. 18. Syntheses, Stereogenic Properties, Structural and Electrochemical Investigations, Biological Activities, and DNA Interactions of New Spirocyclic Mono- and Bisferrocenylphosphazene Derivatives. Inorg Chem 2009; 48:10102-16. [DOI: 10.1021/ic901039k] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nuran Asmafiliz
- Department of Chemistry, Ankara University, 06100 Ankara, Turkey
| | - Zeynel Kılıç
- Department of Chemistry, Ankara University, 06100 Ankara, Turkey
| | - Aslı Öztürk
- Department of Physics, Hacettepe University, 06800 Ankara, Turkey
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Ankara, Turkey
| | - L. Yasemin Koç
- Department of Biology, Ankara University, 06100 Ankara, Turkey
| | - Leyla Açık
- Department of Biology, Gazi University, 06500 Ankara, Turkey
| | - Özgül Kısa
- Department of Medical Microbiology, Gülhane Military Medical Academy and Medical Faculty, 06018 Ankara, Turkey
| | - Ali Albay
- Department of Medical Microbiology, Gülhane Military Medical Academy and Medical Faculty, 06018 Ankara, Turkey
| | - Zafer Üstündağ
- Department of Chemistry, Dumlupınar University, Kütahya, Turkey
| | - Ali Osman Solak
- Department of Chemistry, Ankara University, 06100 Ankara, Turkey
| |
Collapse
|
11
|
Ikai T, Okamoto Y. Structure Control of Polysaccharide Derivatives for Efficient Separation of Enantiomers by Chromatography. Chem Rev 2009; 109:6077-101. [DOI: 10.1021/cr8005558] [Citation(s) in RCA: 347] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Tomoyuki Ikai
- EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan, and College of Material Science and Chemical Engineering, Harbin Engineering University, 145 Nantong St. Harbin 150001, P. R. China
| | - Yoshio Okamoto
- EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan, and College of Material Science and Chemical Engineering, Harbin Engineering University, 145 Nantong St. Harbin 150001, P. R. China
| |
Collapse
|
12
|
İlter EE, Asmafiliz N, Kılıç Z, Işıklan M, Hökelek T, Çaylak N, Şahin E. Phosphorus−Nitrogen Compounds. 14. Synthesis, Stereogenism, and Structural Investigations of Novel N/O Spirocyclic Phosphazene Derivatives. Inorg Chem 2007; 46:9931-44. [DOI: 10.1021/ic701216f] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elif Ece İlter
- Department of Chemistry, Ankara University, 06100 Tandoǧan-Ankara, Turkey
| | - Nuran Asmafiliz
- Department of Chemistry, Ankara University, 06100 Tandoǧan-Ankara, Turkey
| | - Zeynel Kılıç
- Department of Chemistry, Ankara University, 06100 Tandoǧan-Ankara, Turkey
| | - Muhammet Işıklan
- Department of Chemistry, Kırıkkale University, Kırıkkale, Turkey
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Beytepe-Ankara, Turkey
| | - Nagihan Çaylak
- Department of Physics, Sakarya University, 54187 Esentepe-Adapazarı, Turkey
| | - Ertan Şahin
- Department of Chemistry, Atatürk University, 25240 Erzurum, Turkey
| |
Collapse
|
13
|
Comparison of HPLC and NMR characterization of the stereogenic properties of cyclotriphosphazene derivatives containing two equivalent centres of chirality: Cis (meso) and trans (racemic) isomers. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2006.09.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|