Phosphorus–nitrogen compounds. Part 64. Comparative reactions of spiro and ansa (N/O) cyclotetraphosphazenes with bulky (4-fluorobenzyl) N/N and N/O donor type bidentate reagents: structure, stereogenic properties and cytotoxic activity studies

Elmas, Gamze; Binici, Arzu; Özgür, Mehtap; Okumuş, Aytuğ; Kılıç, Zeynel; Çoşut, Bünyemin; Hökelek, Tuncer; Çerçi, Nebahat Aytuna; Açık, Leyla

doi:10.1039/d2nj02280j

Cited by 5 publications

(1 citation statement)

References 65 publications

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“…However, the average exocyclic and endocyclic P-N bond lengths of 2b were found to be in good agreement with the corresponding values in other analogous mono/bis(4-fluorobenzyl)spiro-cyclophosphazenes. 49 Furthermore, the endocyclic P-N-P bond angles of 2b were in the range of 122.36(12)1-122.64(13)1 with an average value of 122.50(13)1 (Table S1, ESI †). The endocyclic N-P-N bond angles of 2b were found to be in the range of 115.32(10)1-117.38(11)1, and the average value was 116.26(10)1 (Table S1, ESI †).…”

Section: X-ray Structure Of 2bmentioning

confidence: 99%

Phosphorus–nitrogen compounds: part 70. Syntheses of tetraaminomono/bis(4-fluorobenzyl)spiro(N/N)cyclotriphosphazenes: structural characterization, Hirshfeld surface analysis and comparative evaluation of esterase activities of hCA I and hCA II isoenzymes

et al. 2023

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Section: X-ray Structure Of 2bmentioning

confidence: 99%

Phosphorus–nitrogen compounds: part 70. Syntheses of tetraaminomono/bis(4-fluorobenzyl)spiro(N/N)cyclotriphosphazenes: structural characterization, Hirshfeld surface analysis and comparative evaluation of esterase activities of hCA I and hCA II isoenzymes

et al. 2023

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Phosphorus–nitrogen compounds: part 75—design, synthesis, stereogenic and conformational properties of chiral dispiro(N/N)cyclotriphosphazenes: structural analysis and photophysical and bioactivity studies

Cemaloğlu,

Asmafiliz,

Kılıç

et al. 2024

Res Chem Intermed

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Multiheterocyclic inorganic–organic hybrid phosphazenes have robust inorganic ring systems with the stabilities of the phosphorus nitrogen skeleton and many different substituents bonded to the P atoms. In present study, unsymmetrical dispirocyclotriphosphazenes were prepared due to their potential to depict steric hindrance and electronic rearrangement in creating permanent chirality for certain conformational and configurational isomers. These isomers may have an effect on DNA bindings and activitiy against selected fungi and bacteria, remarkably. Herein, tetrachlorocyclotriphosphazenes (1 and 2) were reacted with 9-ethyl-N-methyl-3-carbazolyl-1,2-diaminoethane (3), 9-ethyl-N-ethyl-3-carbazolyl-1,2-diaminoethane (4) and 9-ethyl-N-methyl-3-carbazolyl-1,3-diaminopropane (5) to give the new unsymmetrical cis/trans-dispirocyclotriphosphazenes, [(ClBz/BzSpiro-6)R1(N3P3)(CzSpiro-n)R2]Cl2 (Cz: Carbazolyl; R1:Me R2:Me or Et; n = 5 or 6; trans 6a–11a and cis 6b–11b). Characterizations, chiralities, and photophysical and biological properties of the new compounds were examined. The molecular and crystal structures of cis-6b, cis-7b, trans-9a, cis-9b, trans-10a and cis-10b were determined by single crystal X-ray crystallography. The chiralities of these compounds with unsymmetrical spiro-architectures were confirmed by X-ray crystallography. These results were further proven by 31P NMR data recorded with the addition of a chiral solvent (CSA). Additionally, circular dichroism (CD) spectra also supported the results. Photophysical measurements indicate that these compounds show emission with lifetimes of approximately 5.6–5.9 ns. In addition, the bioactivities of some isomers were found to be different and quite high against some bacterial and yeast strains. Trans-8a was very active against B. cereus (MBC = 78.1 µM), while cis-6b, trans-9a and cis-9b were very active against the pathogenic yeast C. albicans (MFC = 156.3 µM). Graphical abstract

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Cyclotriphosphazenes: Pre-harvest foliar applications improve antioxidant activity by increasing phenolic compounds in Lavandula angustifolia Mill.

Açıkgöz,

Tülüce,

Kocaman

et al. 2024

Food Bioscience

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Phosphorus–nitrogen compounds. Part 64. Comparative reactions of spiro and ansa (N/O) cyclotetraphosphazenes with bulky (4-fluorobenzyl) N/N and N/O donor type bidentate reagents: structure, stereogenic properties and cytotoxic activity studies

Cited by 5 publications

References 65 publications

Phosphorus–nitrogen compounds: part 70. Syntheses of tetraaminomono/bis(4-fluorobenzyl)spiro(N/N)cyclotriphosphazenes: structural characterization, Hirshfeld surface analysis and comparative evaluation of esterase activities of hCA I and hCA II isoenzymes

Phosphorus–nitrogen compounds: part 70. Syntheses of tetraaminomono/bis(4-fluorobenzyl)spiro(N/N)cyclotriphosphazenes: structural characterization, Hirshfeld surface analysis and comparative evaluation of esterase activities of hCA I and hCA II isoenzymes

Phosphorus–nitrogen compounds: part 75—design, synthesis, stereogenic and conformational properties of chiral dispiro(N/N)cyclotriphosphazenes: structural analysis and photophysical and bioactivity studies

Cyclotriphosphazenes: Pre-harvest foliar applications improve antioxidant activity by increasing phenolic compounds in Lavandula angustifolia Mill.

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