1.
Egyptian Journal of Pharmaceutical Sciences. 1996; 37 (1-6): 291-302
Dans Anglais
| IMEMR
| ID: emr-40799
Résumé
Uridine and 4-thiouridine were converted into the corresponding 2,3-o-isopropylidene-5-thiocyanato derivatives. Then, each resulted derivative was reacted individually with both of ethyl alpha- chloroacetoacetate, ethyl alpha-bromobenzoylacetate and ethyl bromo pyruvate. Furthermore, these 5-thiocyanato products were transformed into the corresponding 5-mercapto analogues. The produced analogues were undergo ring formation to give the corresponding 4,5-cyclized pyrimidine derivatives
Sujets)
4-Thiouridine/composition chimique , Esters/composition chimique , Uridine/analogues et dérivés , 4-Thiouridine/analogues et dérivés
2.
Egyptian Journal of Pharmaceutical Sciences. 1996; 37 (1-6): 423-9
Dans Anglais
| IMEMR
| ID: emr-40810
Résumé
The present paper described work directed towards reactions of both of 2',3',5'-tri-O-acetyl uridine and its 2-thioanlogue with either of 2H- pyran-2-one, 4,6-dimethyl-2H-pyran-2-one and 2,3-bis [dibromomethyl] benzene to afford cycloaddition products