A simple procedure for the synthesis of high specific activity tritiated (6S)-5-formyltetrahydrofolate.
A simple procedure for the synthesis of high specific activity tritiated (6S)-5-formyltetrahydrofolate.
复制标题
合成高比活度氚化 (6S)-5-甲酰四氢叶酸的简单程序。
DOI:
10.1016/0003-2697(82)90252-4
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发表时间:
1982
影响因子:
2.9
通讯作者:
Colman,PD
中科院分区:
文献类型:
--
作者:
Moran,RG;Colman,PD
The 5-position of tetrahydrofolate was found to be unusually reactive with low concentrations of formic acid in the presence of a water-soluble carbodiimide. The product of this reaction has neutral and acid ultraviolet spectra and chromatographic behavior consistent with its identity as 5-formyltetrahydrofolate (leucovorin). When enzymatically synthesized (6S)-tetrahydrofolate was used as starting material, the product supported the growth of folatedepleted L1210 cells at one-half the concentration required for authentic (6R,S)-leucovorin. This reaction has been used to produce high specific activity (44 Ci/mmol) [3H](6S)-5-formyltetrahydrofolate in high yield. Experiments with [14C]formic acid indicate that 1 mol of formate reacted per mol of tetrahydrofolate but that no reaction occurred with a variety of other folate compounds. (6S)-5-Formyltetrahydrofolate, labeled in the formyl group with14C, has also been synthesized using this reaction. These easily produced, labeled folates should allow close examination of the transport and utillization of leucovorin and of the mechanism of reversal of methotrexate toxicity by reduced folate cofactors.
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影响因子:
5.8
作者:
F. Sirotnak;P. L. Chello;D. M. Moccio;R. Kisliuk;G. Combépine;Y. Gaumont;J. Montgomery
通讯作者:
J. Montgomery
影响因子:
15
作者:
W. Shive;T. Bardos;T. J. Bond;L. Rogers
通讯作者:
L. Rogers
DOI:
--
发表时间:
1966
期刊:
Journal of the National Cancer Institute
影响因子:
--
作者:
George E. Moore;A. Sandberg;K. Ulrich
通讯作者:
K. Ulrich
DOI:
--
发表时间:
1975
期刊:
Biochemical and Biophysical Research Communications - BBRC
影响因子:
--
作者:
R. Sharma;R. Kisliuk
通讯作者:
R. Kisliuk
影响因子:
3.5
作者:
R. Cotton
通讯作者:
R. Cotton