Solid-Supported Cyclocondensation of Arylglyoxal on Ribosylthiourea under Microwave Activation: A Novel and Efficient Synthesis of N-Glycosylated-2-thiohydantoins
Solid-Supported Cyclocondensation of Arylglyoxal on Ribosylthiourea under Microwave Activation: A Novel and Efficient Synthesis of <i>N</i>-Glycosylated-2-thiohydantoins
作者:Ibadur Rahman Siddiqui、Sanjay Yadav、Shayna Shamim、Shireen、Malik A. Waseem、Arjita Srivastava、Anjali Srivastava
DOI:10.1246/bcsj.20130138
日期:2014.4.15
Solid-supported, microwave-assisted efficient one-pot route to N-ribonucleosides of 2-thiohydantoin via reaction of ribosylthiourea and arylglyoxal has been developed. The strategy involves initial nucleophilic addition of ribosylthiourea on arylglyoxal which on subsequent intramolecular cyclocondensation produce thiohydantoin N-ribonucleoside. The protocol involves acidic Al2O3 as solid support and was accomplished efficiently with quantitative conversion of reactants into product.