13C and 31P NMR Study of Paramagnetic Lanthanide(III) Texaphyrins

1995 ◽  
Vol 34 (17) ◽  
pp. 4336-4342 ◽  
Author(s):  
Jerzy Lisowski ◽  
Jonathan L. Sessler ◽  
Tarak D. Mody
Keyword(s):  
31P Nmr ◽  
Nmr Study ◽  
13C And 31P Nmr

Interactions of Lyso 1-Palmitoylphosphatidylcholine with Phospholipids: A 13C and 31P NMR Study

Biochemistry ◽  
1995 ◽  
Vol 34 (16) ◽  
pp. 5666-5677 ◽  
Author(s):  
Shastri P. Bhamidipati ◽  
James A. Hamilton
Keyword(s):  
31P Nmr ◽  
Nmr Study ◽  
13C And 31P Nmr

Determination of the Enantiomeric Excess of Horner Phosphines by 13C NMR Spectroscopy. A 13C and 31P NMR Study of the Diastereomeric Complexes Formed with [η3-(+)(1R,5R )-Pinenyl]nickel Bromide Dimer

1986 ◽  
Vol 41 (1) ◽  
pp. 85-88 ◽  
Author(s):  
Richard Mynott ◽  
Wolf Jürgen Richter ◽  
Günther Wilke
Keyword(s):  
Nmr Spectra ◽  
31P Nmr ◽  
Enantiomeric Excess ◽  
13C Nmr Spectroscopy ◽  
Nmr Data ◽  
Nmr Study ◽  
Diastereomeric Complexes ◽  
13C And 31P Nmr ◽  
Good Agreement

The 13C and 31P NMR data of the Horner phosphines PRR′R″ [R = Me. R′ = t-Bu, R'″ = Ph (2) or i-Pr (4)] and their diastereomeric 1:1 adducts with [η3-(+)(1 R, 5 R)-pinenyI]nickel bromide dimer (3) and (5), respectively, are reported. It is shown that the optical purities of the phosphines can be deduced easily from the NMR spectra. Not only are these values in very good agreement with those obtained from optical rotatory data but they are also obtained much more conveniently.

scholarly journals Accumulation of N-acyl-ethanolamine phospholipids in rat brains during post-decapitative ischemia: a 31P NMR study

1999 ◽  
Vol 40 (3) ◽  
pp. 515-521 ◽  
Author(s):  
Birthe Moesgaard ◽  
Jerzy W. Jaroszewski ◽  
Harald S. Hansen
Keyword(s):  
31P Nmr ◽  
Nmr Study

Reduced substrate oxidation in postischemic myocardium: 13C and 31P NMR analyses

1990 ◽  
Vol 258 (5) ◽  
pp. H1357-H1365 ◽  
Author(s):  
E. D. Lewandowski ◽  
D. L. Johnston
Keyword(s):  
Steady State ◽  
31P Nmr ◽  
Tca Cycle ◽  
High Energy ◽  
Substrate Oxidation ◽  
High Energy Phosphates ◽  
Atp Content ◽  
And Control ◽  
13C And 31P Nmr ◽  
Postischemic Myocardium

13C and 31P nuclear magnetic resonance (NMR) spectra were used to assess substrate oxidation and high-energy phosphates in postischemic (PI) isolated rabbit hearts. Phosphocreatine (PCr) increased in nonischemic controls on switching from glucose perfusion to either 2.5 mM [3-13C]pyruvate (120%, n = 7) or [2-13C]acetate (114%, n = 8, P less than 0.05). ATP content, oxygen consumption (MVO2), and hemodynamics (dP/dt) were not affected by substrate availability in control or PI hearts. dP/dt was 40-60% lower in PI hearts during reperfusion after 10 min ischemia. Hearts reperfused with either pyruvate (n = 11) or acetate (n = 8) regained preischemic PCr levels within 45 s. Steady-state ATP levels were 55-70% of preischemia with pyruvate and 52-60% with acetate. Percent maximum [4-13C]glutamate signal showed reduced conversion of pyruvate to glutamate via the tricarboxylic acid (TCA) cycle at 4-min reperfusion (PI = 24 +/- 4%, means +/- SE; Control = 48 +/- 4%). The increase in 13C signal from the C-4 position of glutamate was similar to control hearts within 10.5 min. The increase in [4-13C]glutamate signal from acetate was not different between PI and control hearts. The ratio of [2-13C]Glu:[4-13C]Glu, reflecting TCA cycle activity, was reduced in PI hearts with acetate for at least 10 min (Control = 0.76 +/- 0.03; PI = 0.51 +/- 0.09) until steady state was reached. Despite rapid recovery of oxidative phosphorylation, contractility remained impaired and substrate oxidation was significantly slowed in postischemic hearts.

13C and 31P NMR Studies of Phosphomycin, A Phosphonate Antibiotic

1989 ◽  
Vol 22 (4) ◽  
pp. 363-374 ◽  
Author(s):  
M. Delfini ◽  
M. E. Di Cocco ◽  
M. R. Del Giudice ◽  
E. Gaggelli ◽  
G. Valensin ◽  
...  
Keyword(s):  
31P Nmr ◽  
Nmr Studies ◽  
13C And 31P Nmr
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