Synthesis of adenosylcobinamide 2-chlorophenyl phosphate, a zwitterionic cobinamide phosphate analog of adenosylcobalamin en route to crystallizable cobinamides.
Synthesis of adenosylcobinamide 2-chlorophenyl phosphate, a zwitterionic cobinamide phosphate analog of adenosylcobalamin en route to crystallizable cobinamides.
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腺苷钴酰胺 2-氯苯基磷酸盐的合成,腺苷钴胺的两性离子钴酰胺磷酸盐类似物,用于合成可结晶的钴酰胺。
DOI:
10.1016/s0162-0134(02)00402-6
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发表时间:
2002
影响因子:
3.9
通讯作者:
Finke,RichardG
中科院分区:
文献类型:
--
作者:
White,WesleyT;Finke,RichardG
The design and implementation of a new, higher yield synthetic method for synthesizing zwitterionic cobinamide phosphates is described. Adenosylcobinamide 2-chlorophenyl phosphate, β-AdoCbi-PAr—a 5,6-dimethylbenzimidazole-free adenosylcobalamin analog, where a 2-chlorophenyl group replaces the ribofuranose and 5,6-dimethylbenzimidazole moieties—is prepared in tens of milligram quantities, quantities sufficient for crystallization and enzyme trials, amounts 100-fold greater than previously available. The use of31P NMR spectroscopy to follow reactions directly, the use of control reactions to learn how to reduce reactant water content, and the use of reaction solvents that completely dissolved the corrinoid reactants were crucial for developing this new synthetic route. β-AdoCbi-PAr was synthesized in 10% overall isolated yield from cyanocobinamide. Cyanocobinamide was converted to cyanocobinamide 2-chlorophenyl phosphate by direct phosphorylation with 2-chlorophenyl phosphodi-(1,2,4-triazolide) in 25% isolated yield and ≥98% purity. Sodium borohydride reduction of cyanocobinamide 2-chlorophenyl phosphate and reaction with 5′-chloro-5′-deoxy-adenosine produced β-AdoCbi-PAr in 42% yield and ≥98% purity. These compounds were characterized by HPLC,1H and31P NMR, UV–visible spectroscopy, and liquid secondary ionization mass spectroscopy.
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DOI:
--
发表时间:
1963
期刊:
影响因子:
--
作者:
R. Bonnett
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R. Bonnett
DOI:
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发表时间:
1997
期刊:
European Journal of Biochemistry
影响因子:
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DOI:
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发表时间:
1996
期刊:
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作者:
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通讯作者:
R. Finke
影响因子:
56.9
作者:
DRENNAN, CL;HUANG, S;LUDWIG, ML
通讯作者:
LUDWIG, ML