A new one-step synthesis of 8-aminopurine nucleoside analogs from 6-(glycosylamino)-5-nitrosopyrimidines
摘要:
The reaction of 6-[[beta-D-(per-O-acetyl)glycopyranosyl]amino]-5-nitrosopyrimidines (1) with POCl3/formamide furnished 8-amino-9-[(per-O-acetyl)glycopyranosyl]purines (2) in good yield. In this reaction formamide seems to play a double role, as the source of the C(8)-amino group of the purine and as the agent responsible for the reduction of the C(5)-nitroso group of the pyrimidine to a hydroxylamino group. A mechanism which reflects this belief is presented. Chemical evidence that supports the mechanism is provided.
A new one-step synthesis of 8-aminopurine nucleoside analogs from 6-(glycosylamino)-5-nitrosopyrimidines
作者:Manuel Melguizo、Manuel Nogueras、Adolfo Sanchez
DOI:10.1021/jo00028a031
日期:1992.1
The reaction of 6-[[beta-D-(per-O-acetyl)glycopyranosyl]amino]-5-nitrosopyrimidines (1) with POCl3/formamide furnished 8-amino-9-[(per-O-acetyl)glycopyranosyl]purines (2) in good yield. In this reaction formamide seems to play a double role, as the source of the C(8)-amino group of the purine and as the agent responsible for the reduction of the C(5)-nitroso group of the pyrimidine to a hydroxylamino group. A mechanism which reflects this belief is presented. Chemical evidence that supports the mechanism is provided.