Novel 3′-deoxy analogs of the anti-HBV agent entecavir: synthesis of enantiomers from a single chiral epoxide
摘要:
A synthesis of novel 3'-deoxy analogs of the anti-HBV agent entecavir (BMS-200475) was devised using regioselective ring opening of suitable cyclopentene epoxides as the key step. This versatile approach afforded access to an enantiomeric pair of carbocyclic nucleosides from a single chiral intermediate. (C) 2003 Elsevier Ltd. All rights reserved.
Novel 3′-deoxy analogs of the anti-HBV agent entecavir: synthesis of enantiomers from a single chiral epoxide
摘要:
A synthesis of novel 3'-deoxy analogs of the anti-HBV agent entecavir (BMS-200475) was devised using regioselective ring opening of suitable cyclopentene epoxides as the key step. This versatile approach afforded access to an enantiomeric pair of carbocyclic nucleosides from a single chiral intermediate. (C) 2003 Elsevier Ltd. All rights reserved.
Synthesis of (R)-4-hydroxy-2-benzyloxymethylcyclopent-2-en-1-one from D-glucose via palladium(0)-catalysed rearrangement of a vinylic epoxide intermediate
作者:Sa�d Achab、Jean-Pierre Cosson、Bhupesh C. Das
DOI:10.1039/c39840001040
日期:——
transformation of D-glucose into (R)-4-hydroxy-2-benzyloxymethylcyclopent-2-en-1-one (3), a potential chiral synthon for the antibiotic (–)-pentenomycin I (4), has been achieved via the intramolecualr aldolisation–dehydration of the 2-hydroxy-4-oxo-aldehyde (9) which was obtained by two different routs, one of them involving palladium(0)-catalysedrearrangement of a vinylic epoxid intermediate.