SYNTHESIS OF RIBONUCLEOSIDES OF 2-THIOXOPYRIDO [2,3-d]PYRIMIDINES BY PHASE TRANSFER CATALYSIS AND THEIR ANTIMICROBIAL ACTIVITY
摘要:
The ribonucleosides viz; 2-thioxo-3,5,7-trisubstituted-1-(2,3,5-tri-O-benzoyl-beta -D-ribofuranosyl)pyrido[2,3-d]pyrimidine-4 (1H)-ones have been synthesized via phase transfer ribosylation of 2-thioxo- 3,5,7-trisubstituted pyrido[2,3-d]pyrimidine-4(IH)-ones with 2,3,5-tri-O-benzoyl-beta -D- ribofuranosyl bromide in biphasic solvent such as CH2Cl2-50% aqueous NaOH using tetrabutylammonium bromide as phase transfer catalysis (PTC). The synthesized compounds have been characterized by elemental analyses, spectral data and screened for their antimicrobial activity.
SYNTHESIS OF RIBONUCLEOSIDES OF 2-THIOXOPYRIDO [2,3-d]PYRIMIDINES BY PHASE TRANSFER CATALYSIS AND THEIR ANTIMICROBIAL ACTIVITY
摘要:
The ribonucleosides viz; 2-thioxo-3,5,7-trisubstituted-1-(2,3,5-tri-O-benzoyl-beta -D-ribofuranosyl)pyrido[2,3-d]pyrimidine-4 (1H)-ones have been synthesized via phase transfer ribosylation of 2-thioxo- 3,5,7-trisubstituted pyrido[2,3-d]pyrimidine-4(IH)-ones with 2,3,5-tri-O-benzoyl-beta -D- ribofuranosyl bromide in biphasic solvent such as CH2Cl2-50% aqueous NaOH using tetrabutylammonium bromide as phase transfer catalysis (PTC). The synthesized compounds have been characterized by elemental analyses, spectral data and screened for their antimicrobial activity.