Synthesis of Derivatives of 3-Methylxantheve and 1-Methyl-3-Isobutylxanthine 7-β-D-Ribofuranosides
摘要:
Methods of synthesis of 7-(2',3',5'-tri-O-acetyl-beta-D-ribofuranosyl)-8-chloro-3-methylxanthine (5a) and 1-methyl-3-isobutylxanthine (5b) were reported. Further nucleophilic displacement of chlorine has provided the corresponding 8-alkylamino and 8-benzylamino derivatives (6a,b-9a,b). Several 5'-acyl analogues of 3-methylxanthine-7-beta-D-ribofuranoside (15-18) were synthesized using 7-(2',3'-di-O-isopropylidene-beta-D-ribofuranosyl)-3-methylxanthine (10) as intermediate.
Synthesis of Derivatives of 3-Methylxantheve and 1-Methyl-3-Isobutylxanthine 7-β-D-Ribofuranosides
摘要:
Methods of synthesis of 7-(2',3',5'-tri-O-acetyl-beta-D-ribofuranosyl)-8-chloro-3-methylxanthine (5a) and 1-methyl-3-isobutylxanthine (5b) were reported. Further nucleophilic displacement of chlorine has provided the corresponding 8-alkylamino and 8-benzylamino derivatives (6a,b-9a,b). Several 5'-acyl analogues of 3-methylxanthine-7-beta-D-ribofuranoside (15-18) were synthesized using 7-(2',3'-di-O-isopropylidene-beta-D-ribofuranosyl)-3-methylxanthine (10) as intermediate.