Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Keith M, Davies"'
Publikováno v:
The Journal of organic chemistry. 64(14)
Synthetic procedures have been devised to exploit the bifunctional amine piperazine (pip) as a linker capable of attaching the nitric oxide (NO)-releasing diazeniumdiolate functional group [N(O)NO]- to a diverse selection of biomedically useful molec
Autor:
Stefan El-Gayar, Larry K. Keefer, Keith M. Davies, Thomas C. Wilde, Joseph E. Saavedra, Ulrike Schleicher, Michael L. Citro, Carlos A. Valdez, Jeffrey R. Deschamps, Joseph J. Barchi, Brett M. Showalter, Damon A. Parrish, Christian Bogdan
Publikováno v:
Journal of Medicinal Chemistry
Glycosylated diazeniumdiolates of structure R 2NN(O)NO-R' (R' = a saccharide residue) are potential prodrugs of the nitric oxide (NO)-releasing but acid-sensitive R 2NN(O)NO (-) ion. Moreover, cleaving the acid-stable glycosides under alkaline condit
Autor:
Mazen El-Hajj, Joseph A. Hrabie, Amr Majul, Bach T. Dinh, Stacy E. Price, Victor N. Morozov, Keith M. Davies
Publikováno v:
Nitric Oxide. 18:113-121
The effect of small unilamellar phospholipid vesicles on the acid-catalyzed dissociation of nitric oxide from diazeniumdiolate ions, R(1)R(2)N[N(O)NO](-), [1: R(1)=H(2)N(CH(2))(3)-, R(2)=H(2)N(CH(2))(3)NH(CH(2))(4)-; 2: R(1)=R(2)=H(2)N(CH(2))(3)-; 3:
Autor:
Larry K. Keefer, David J. Waterhouse, Joseph Ivanic, Jack R. Collins, Gwendolyn N. Chmurny, John R. Klose, Yan Ni Wang, Judith L. Flippen-Anderson, D. Scott Bohle, Joseph E. Saavedra, Challice L. Bonifant, Keith M. Davies, Jeffrey R. Deschamps
Publikováno v:
Journal of the American Chemical Society. 127:5388-5395
Here, we explore the chemistry of the previously undocumented E form of diazeniumdiolates having the structure R(1)R(2)NN(O)=NOR(3). Reported crystallographic studies have uniformly revealed the Z configuration, and our attempts to observe a Z --> E
Autor:
Keith M. Davies, and Joseph A. Hrabie, Stacy E. Price, Joseph E. Saavedra, Patricia Lorenzo, Dilara Jappar
Publikováno v:
Langmuir. 19:2096-2102
The effect of surfactant micelles on the acid-catalyzed dissociation of NO from diazeniumdiolate ions of structure R1R2N[N(O)NO]- has been examined in phosphate-buffered solutions at 37 °C. The reaction behavior of zwitterionic substrates [2, R1 = R
Publikováno v:
Journal of the American Chemical Society. 123:5473-5481
Diazeniumdiolate ions of structure R(2)N[N(O)NO](-) (1) are of pharmacological interest because they spontaneously generate the natural bioregulatory species, nitric oxide (NO), when dissolved in aqueous media. Here we report the kinetic details for
Autor:
Jingxi Chu, Keith M. Davies, Anna P. Shanklin, Larry K. Keefer, William G. Rice, Joseph E. Saavedra, Challice L. Bonifant, Aloka Srinivasan, Jim A. Turpin, Judith L. Flippen-Anderson
Publikováno v:
The Journal of Organic Chemistry. 66:3090-3098
Ions of structure R2N[N(O)NO]- and their alkylation products have seen increasing use as nitric oxide (NO)-generating agents for biomedical research applications. Here we show that such diazeniumdiolate anions can readily displace halide from a varie
Publikováno v:
Organic Preparations and Procedures International. 31:189-192
(1999). ADDUCTS OF PIPERAZINE WITH NITRIC OXIDE. Organic Preparations and Procedures International: Vol. 31, No. 2, pp. 189-192.
Publikováno v:
Inorganic Chemistry. 33:1741-1747
The effect of added surfactants, sodium dodecylsulfate (SDS), Triton X-100 (C 8 H 17 C 6 H 4 (OCH 2 CH 2 ) x OH, x=9, 10), and cetyltrimethylammonium bromide (CTAB), on measured rate constants for electron transfer between Co(terpy) 2 2+ and a series
Publikováno v:
Journal of physical organic chemistry. 23(3)
The kinetics of aromatic nucleophilic substitution of the nitric oxide generating diazeniumdiolate ion, DEA/NO, by thiols, (L-glutathione, L-cysteine, DL-homocysteine, 1-propanethiol, 2-mercaptoethanol and sodium thioglycolate) from the prodrug, DNP-