Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Jill K. Wolken"'
Publikováno v:
Journal of Mass Spectrometry and Advances in the Clinical Lab, Vol 33, Iss , Pp 7-13 (2024)
Background: As an active metabolite of a commonly prescribed immunosuppressant, mycophenolic acid (MPA) levels are often monitored to prevent organ rejection following a transplant. Triazoles are often prescribed for treatment of invasive fungal infe
Externí odkaz:
https://doaj.org/article/693ec4cbd4064da9ae922f3de7ff7e32
Publikováno v:
International Journal of Mass Spectrometry. 267:30-42
Gas-phase cytosine molecules and cation–radicals represent a complex system of several nearly isoenergetic tautomers within each group. Computational methods differ in ordering the relative enthalpies of neutral cytosine tautomers. At our highest l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ff6de76dd5613f08df3d5eec03a1014
https://doi.org/10.1016/j.ijms.2007.02.016
https://doi.org/10.1016/j.ijms.2007.02.016
Publikováno v:
The Journal of Physical Chemistry A. 105:9130-9141
The elusive N-hydroxypyridyl radical 1 has been generated transiently in the gas phase by collisional neutralization of the stable cation 1+. The radical underwent extensive dissociation by specific losses of H, OH, and ring-cleavage reactions, as el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41ad150427336e0f0fcf0ca17d11b8c8
https://doi.org/10.1021/jp010844k
https://doi.org/10.1021/jp010844k
Autor:
Jill K. Wolken, František Tureček and
Publikováno v:
The Journal of Physical Chemistry A. 105:8740-8747
The uracil cation radical was calculated to exist predominantly as the 1,3-dioxo tautomer 1•+, similar to the most stable tautomer of neutral uracil (1). The enol forms of 1•+ were found to be 10−173 kJ mol-1 less stable than 1•+ and should n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcefdddfc658eaa5c210684a1453c31e
https://doi.org/10.1021/jp0116860
https://doi.org/10.1021/jp0116860
Autor:
František Tureček, Jill K. Wolken and
Publikováno v:
The Journal of Physical Chemistry A. 105:8352-8360
The 4-hydroxy-3,4-dihydropyrimidine-2(1H)-on-4-yl radical (1), an elusive hydrogen atom adduct to the O-4 position in uracil, was generated in the gas phase by femtosecond collisional electron transfer to O-4 protonated uracil and investigated by neu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33d90090517d232be75b20f29e07a1e8
https://doi.org/10.1021/jp011348z
https://doi.org/10.1021/jp011348z
Autor:
František Tureček, Jill K. Wolken
Publikováno v:
The Journal of Physical Chemistry A. 103:6268-6281
Isomeric radicals corresponding to hydrogen atom adducts to 2-hydroxypyridine (1) and 2-(1H)pyridone (2) were investigated by neutralization-reionization mass spectrometry and combined ab initio and density functional theory calculations. Gas-phase p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2176a7770be24494db18973852f64e6c
https://doi.org/10.1021/jp991077g
https://doi.org/10.1021/jp991077g
Autor:
František Tureček, Jill K. Wolken and
Publikováno v:
Journal of the American Chemical Society. 121:6010-6018
Radicals 3-hydroxy-(1H)-pyridinium (1H) through 3-hydroxy-(6H)-pyridinium (6H) and 3-pyridylhydroxonium (7H) were studied as models of hydrogen atom adducts to nitrogen heterocycles. Radical 1H was generated in the gas phase by femtosecond collisiona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7185fa2ad60bc4ef6efe8fa92ddbd805
https://doi.org/10.1021/ja983789a
https://doi.org/10.1021/ja983789a
Autor:
František Tureček, Jill K. Wolken
Publikováno v:
The Journal of Physical Chemistry A. 103:1905-1912
A series of isomeric 4-aminopyrimidinium radicals were used to model hydrogen atom adducts of nucleobases containing the 4-aminopyrimidine structure motif. Relative stabilities and activation energies for dissociations by hydrogen atom loss have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c840192d794f6f5daae79a2641ac6808
https://doi.org/10.1021/jp984826n
https://doi.org/10.1021/jp984826n
Publikováno v:
Journal of Mass Spectrometry. 32:1162-1169
Hypervalent organic ammonium radicals were generated by collisional neutralization with dimethyl disulfide of protonated 1,4-diazabicyclo[2.2.2]octane (1H+), N,N′-dimethylpiperazine (2H+) and N-methylpiperazine (3H+). The radicals dissociated compl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4009f0cef08ec2b4378d596804f377f
https://doi.org/10.1002/(sici)1096-9888(199711)32:11<1162::aid-jms571>3.0.co
https://doi.org/10.1002/(sici)1096-9888(199711)32:11<1162::aid-jms571>3.0.co
Publikováno v:
Journal of the American Society for Mass Spectrometry. 8:1111-1123
A series of isomeric hexenylammonium and hexenyldimethylammonium cations were neutralized by collisional electron transfer in the gas phase in an attempt to generate hypervalent ammonium radicals. The radicals dissociated completely on the 4.8–5.4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20d746e275a954c8654daf6829861a43
https://doi.org/10.1016/s1044-0305(97)00184-0
https://doi.org/10.1016/s1044-0305(97)00184-0