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Asymmetric synthesis of 4'-alpha-alkylcarbovir derivatives
Nucleic Acids Symposium Series
|January 1, 1997
Abstract:
Asymmetric synthesis of 4'-alpha-alkylcarbovir derivatives 3 were achieved based on Sakai's asymmetric alkylation of beta-keto esters. The key carbocyclic intermediate 12 was synthesized from 6 via an eleven-step sequence. Coupling of 12 with 2-amino-6-chloropurine followed by desilylation and subsequent hydrolysis gave the target compounds 3 in moderate yields.