Yazar "Okumus, Aytug" için listeleme
-
Phosphorus-nitrogen compounds Part 32. Structural and thermal characterizations, antimicrobial and cytotoxic activities, and in vitro DNA binding of the phosphazenium salts
Akbas, Huseyin; Okumus, Aytug; Karadag, Ahmet; Kilic, Zeynel; Hokelek, Tuncer; Koc, L. Yasemin; Turk, Mustafa (Springer, 2016)The salicylic acid salts of fully substituted mono(4-fluorobenzyl)spirocyclotriphosphazenes (10-15) were prepared. The structures of these phosphazenium salts (10a-15a) were determined by elemental analyses, FTIR and H-1, ... -
Phosphorus-nitrogen compounds part 33: in vitro cytotoxic and antimicrobial activities, DNA interactions, syntheses, and structural investigations of new mono(4-nitrobenzyl)spirocyclotriphosphazenes
Okumus, Aytug; Akbas, Huseyin; Kilic, Zeynel; Koc, L. Yasemin; Acik, Leyla; Aydin, Betul; Dal, Hakan (Springer, 2016)The condensation reactions of hexachlorocyclotriphosphazene, N3P3Cl6, with N-alkyl-N'-mono(4-nitrobenzyl)diamines (1-3), NO2PhCH2NH(CH2) (n) NHR1 (R-1 = CH3 or C2H5), led to the formation of the mono(4-nitrobenzyl)spiroc ... -
Phosphorus-nitrogen compounds. Part 35. Syntheses, spectroscopic and electrochemical properties, and antituberculosis, antimicrobial and cytotoxic activities of mono-ferrocenyl-spirocyclotetraphosphazenes
Okumus, Aytug; Elmas, Gamze; Cemaloglu, Resit; Aydin, Betul; Binici, Arzu; Simsek, Hulya; Hokelek, Tuncer (Royal Soc Chemistry, 2016)The reactions of octachlorocyclotetraphosphazene, N4P4Cl8, with N-alkyl-N-mono-ferrocenyldiamines, FcCH(2)NH(CH2)(n)NHR1 [n = 2, Fc = ferrocene, R-1 = Me (1); n = 2, R-1 = Et (2) and n = 3, R-1 = Me (3)], led to the formation ... -
Phosphorus-nitrogen compounds. Part 37. Syntheses and structural characterizations, biological activities of mono and bis(4-fluorobenzyl)spirocyclotetraphosphazenes
Elmas, Gamze; Okumus, Aytug; Sevinc, Pelin; Kilic, Zeynel; Acik, Leyla; Atalan, Mustafa; Hokelek, Tuncer (Royal Soc Chemistry, 2017)The Cl substitution reactions of octachlorocyclotetraphosphazene, N4P4Cl8, with one equimolar amount of (4-fluorobenzyl)diamines (1-3) affords mono(4-fluorobenzyl) spirocyclotetraphosphazenes (4-6) as minor products. ... -
Phosphorus-nitrogen compounds. part 38. Syntheses, characterizations, cytotoxic, antituberculosis and antimicrobial activities and DNA interactions of spirocyclotetraphosphazenes with bis-ferrocenyl pendant arms
Elmas, Gamze; Okumus, Aytug; Cemaloglu, Resit; Kilic, Zeynel; Celik, Suheyla Pinar; Acik, Leyla; Hokelek, Tuncer (Elsevier Science Sa, 2017)The reactions of N4P4Cl8 (1), with two equimolar amounts of N-(1-ferrocenylmethyl)-N-methyl-propylenediamine gave the monoferrocenyl-spiro (as a byproduct), bisferrocenyl-2-trans-6-dispiro (2) and bisferrocenyl-2-cis-6-dispiro ... -
Phosphorus-nitrogen compounds. Part 42. The comparative syntheses of 2-cis-4-ansa(N/O) and spiro(N/O) cyclotetraphosphazene derivatives: spectroscopic and crystallographic characterization, antituberculosis and cytotoxic activity studies
Binici, Arzu; Okumus, Aytug; Elmas, Gamze; Kilic, Zeynel; Ramazanoglu, Nagehan; Acik, Leyla; Hokelek, Tuncer (Royal Soc Chemistry, 2019)The reaction of N4P4Cl8 (1) with one equimolar amount of the sodium salt of an N/O donor-type bidentate ligand (2) afforded two kinds of derivatives, namely, mono-ferrocenyl-2-cis-4-dichloro-ansa- (2,4-ansa; 3) and ... -
Phosphorus-nitrogen compounds. Part 44. The syntheses of N,N-spiro bridged cyclotriphosphazene derivatives with (4-fluorobenzyl) pendant arms: Structural and stereogenic properties, DNA interactions, antimicrobial and cytotoxic activities
Ozturk, Ezel; Okumus, Aytug; Kilic, Zeynel; Kilic, Adem; Kayalak, Hande; Acik, Leyla; Hokelek, Tuncer (Elsevier Science Sa, 2019)Isopropylaminopentachlorocyclotriphosphazene, (N3P3Cl5(NHCHMe2) (1), containing a P-NH group in the alkyl-chain, gives the NN-spirobridged octachlorobiscyclotriphosphazene, [N3P3Cl4(NCHMe2)](2) (2), in the presence of NaH. ... -
Phosphorus-nitrogen compounds. Part 48. syntheses of the phosphazenium salts containing 2-pyridyl pendant arm: structural characterizations, thermal analysis, antimicrobial and cytotoxic activity studies
Elmas, Gamze; Okumus, Aytug; Kilic, Zeynel; Ozbeden, Pelin; Acik, Leyla; Tunali, Beste Cagdas; Turk, Mustafa (NATL INST SCIENCE COMMUNICATION-NISCAIR, 2020)The phosphazenium salts (protic ionic liquids, PILs/protic molten salts, PMOSs) (6a-6d and 7a) of the free phosphazene bases (4a-4d and 5a) have been prepared by the reactions of the corresponding cyclotriphosphazenes with ... -
Syntheses, structural characterization and biological activities of spiro-ansa-spiro-cyclotriphosphazenes
Basterzi, Nisan Sevin; Kocak, Selen Bilge; Okumus, Aytug; Kilic, Zeynel; Hokelek, Tuncer; Celik, Omer; Aydin, Betul (Royal Soc Chemistry, 2015)The replacement reactions of the Cl-atoms in partly substituted spiro-ansa-spiro-cyclotriphosphazenes (7 and 8) with excess pyrrolidine, 4-(2-aminoethyl) morpholine, and 1,4-dioxa-8-azaspiro[4,5] decane in dry THF led to ...