Mechanistic studies in the synthesis of a series of thieno-expanded xanthosine and guanosine nucleosides.
Mechanistic studies in the synthesis of a series of thieno-expanded xanthosine and guanosine nucleosides.
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DOI:
10.1016/j.tet.2008.09.011
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发表时间:
2008-11-24
期刊:
影响因子:
2.1
通讯作者:
Seley-Radtke KL
中科院分区:
文献类型:
--
作者:
Zhang Z;Wauchope OR;Seley-Radtke KL
During the synthetic pursuit of guanosine (triG) and xanthosine (triX) tricyclic nucleosides analogues, an interesting side product was discovered. In an effort to uncover the mechanistic factors leading to this result, a series of reaction conditions were investigated. It was found that by varying the conditions, the appearance of the side product could be controlled. In addition, the yield of the desired products could be manipulated to afford either a 50:50 mix of both triG and triX, or a majority of one or the other. To demonstrate the broad utility of the method, it was also adapted to the synthesis of guanosine and xanthosine from 5-amino-1-β-D-ribofuranosyl-4-imidazolecarboxyamide (AICAR). The mechanistic details surrounding the synthetic efforts are reported herein.
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