scholarly journals The mechanism of fructose formation in goat placenta with special reference to the possible involvement of sorbitol or of phosphoric acid esters

1961 ◽  
Vol 80 (1) ◽  
pp. 181-187 ◽  
Author(s):  
MW NEIL ◽  
DG WALKER ◽  
FL WARREN
Keyword(s):  
Phosphoric Acid ◽  
Special Reference ◽  
Acid Esters

Nonenzymatic Catalysis by Metal Ions and Phosphoric Acid Esters of Hydroxamic Acid Formation

1980 ◽  
Vol 35 (6) ◽  
pp. 727-730
Author(s):  
Oemer Saygin ◽  
Peter Decker
Keyword(s):  
Amino Acids ◽  
Phosphoric Acid ◽  
Metal Ions ◽  
Inorganic Phosphate ◽  
Hydroxamic Acid ◽  
Hydroxamic Acids ◽  
Bivalent Ions ◽  
No Release ◽  
Catalytic Effects ◽  
Acid Esters

Abstract Nonenzymatic catalysis by bivalent ions of Be, Mg, Ca, Zn, Mn, Ni and Co and bioorganic phosphates of the formation of hydroxamic acids from acetate or amino acids has been studied systematically. Increased yields of hydroxamate were observed at particular combinations of reactants. The most prominent increase (ca. 15-fold) was found with acetate and Ni++, and with a combination of ATP and Be++. Among others especially ribose-5-phosphate and glucose-5-phosphate enhanced yields in the presence of most metal ions. Since no release of inorganic phosphate was observed, this effect cannot be interpreted as an evidence for intermediate transhosphorylation reactions; it may also result from simple catalytic effects of metal sugar complexes.

New Synthesis of Phosphorous and Phosphoric Acid Esters

Synthesis ◽  
1991 ◽  
Vol 1991 (03) ◽  
pp. 201-204 ◽  
Author(s):  
M. Froneman ◽  
T. A. Modro
Keyword(s):  
Phosphoric Acid ◽  
New Synthesis ◽  
Acid Esters

scholarly journals Straightforward Immobilization of Phosphonic Acids and Phosphoric Acid Esters on Mesoporous Silica and Their Application in an Asymmetric Aldol Reaction

Nanomaterials ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 249 ◽  
Author(s):  
Christian Weinberger ◽  
Tatjana Heckel ◽  
Patrick Schnippering ◽  
Markus Schmitz ◽  
Anpeng Guo ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Phosphoric Acid ◽  
Surface Area ◽  
Aldol Reaction ◽  
Synthesis Method ◽  
Mesoporous Silicas ◽  
Phosphonic Acids ◽  
Asymmetric Aldol ◽  
Asymmetric Aldol Reaction ◽  
Acid Esters

The combined benefits of moisture-stable phosphonic acids and mesoporous silica materials (SBA-15 and MCM-41) as large-surface-area solid supports offer new opportunities for several applications, such as catalysis or drug delivery. We present a comprehensive study of a straightforward synthesis method via direct immobilization of several phosphonic acids and phosphoric acid esters on various mesoporous silicas in a Dean–Stark apparatus with toluene as the solvent. Due to the utilization of azeotropic distillation, there was no need to dry phosphonic acids, phosphoric acid esters, solvents, or silicas prior to synthesis. In addition to modeling phosphonic acids, immobilization of the important biomolecule adenosine monophosphate (AMP) on the porous supports was also investigated. Due to the high surface area of the mesoporous silicas, a possible catalytic application based on immobilization of an organocatalyst for an asymmetric aldol reaction is discussed.

Isolation and characterization of some hydroxy fatty and phosphoric acid esters of 10-hydroxy-2-decenoic acid from the royal jelly of honeybees (Apis mellifera)

Lipids ◽  
2005 ◽  
Vol 40 (8) ◽  
pp. 833-838 ◽  
Author(s):  
Naoki Noda ◽  
Kazue Umebayashi ◽  
Takafumi Nakatani ◽  
Kazumoto Miyahara ◽  
Kaori Ishiyama
Keyword(s):  
Apis Mellifera ◽  
Phosphoric Acid ◽  
Royal Jelly ◽  
Decenoic Acid ◽  
Isolation And Characterization ◽  
Acid Esters
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