Silver dibenzyl phosphate

Phosphorylation O-Benzyl phosphorus 0,0-diphenylphosphoric anhydride. 2-Cyanomethyl phosphate. Dibromomalonamide. Di-p-nilrobenzylphosphoryl chloridate. Dioxane diphosphate. Diphenylphosphorochloridate. Ethoxyacetylene. Metaphosphoric acid. o-Phenyl-ene phosphorochloridate. Phosphoric acid, anhydrous. Phosphorodimorpholidic chloride. Phosphorus pentoxide-Phosphoric acid. Phosphoryl chloride. Polyphosphoric acid. Pyro-phosphoryl tetrachloride. Silver dibenzyl phosphate. Silver diphenyl phosphate. Tetra-p-nitrophenyl pyrophosphate. 

When 6 -deoxy-5 -iodo-2, 3 -0-isopropylideneuridine (203) is treated with silver dibenzyl phosphate or with silver tribenzyl pyrophosphate, the protected 5 -nucleotide (205, R = benzyl or dibenzyl phosphoric) was obtained after removal of the protecting groups, this gave uridine 5 -phos-phate (206, R = H) and uridine 5 -pyrophosphate (R = POsHa). It is possible that, in the formation of (205) from (203), anhydronucleoside (204) was an intermediate which underwent attack by the phosphoric... 

Ethyl chloroformate added to a suspension of silver dibenzyl phosphate in dry dioxane, and stirred 2 hrs. at room temp. -> dibenzyl carbethoxy phosphate. Y 98%. A. Lapidot and M. Halmann, J. Org. Chem. 28, 1394 (1963). 

D-Ribopyranose i-phosphate was prepared from 2,3,4-tri-O-acetyl-D-ribopyranosyl i-bromide and silver dibenzyl phosphate. ... 

D-Xylop3nanose i-phosphate has been prepared from the acetobromo xylose and monosilver phosphate or silver dibenzyl phosphate . 

D-Glucose i-phosphate was obtained by the action of maltose phosphorylase from Neisseria menit idis. Synthesis has been achieved with acetobromo glucose and silver dibenzyl phosphate or monosilver phosphate . 

Dibenzylphosphoric acid and dicyclohexylcarbodi-imide were used to generate tetrabenzyl phosphate. This could then be reacted with 2,3-isopropylidene-glycerol in the presence of imidazole to yield 2,3-iso-propylidene-5n-glycerol-l-dibenzyl phosphate. De-benzylation of the latter was carried out with barium iodide and the barium salt was converted to the silver salt which was reacted with 3-iododeoxy-l-oleoyl-2-palmitoyl-5n-glycerol. The fully protected phosphatidylglycerol was debenzylated, followed by reaction with boric acid in trimethyl borate which effected removal of the isopropylidene group (Rosenthal, 1975). Yields of 30% are obtained (Slotboom and Bonsen, 1970). 

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