Synthesis and anti-HIV Study of Novel Acyclic Guanine Derivatives
作者:Aihong Kim、Joon Hee Hong
DOI:10.1080/15257770701795839
日期:2008.1.18
This paper reports a new method for synthesizing an acyclic version of 6 '-methylene and 6 '(alpha)-methylated carbovir analogues. The introduction of a methylene group to the requisite 6 '-position was carried out employing a Mannich type reaction using Eshenmoser's salt (methylene-N,N-dimethylammonium iodide). Carbonyl enolate alkylation (LiHMDS, CH3I) was used to introduce a methyl group to the
Synthesis and Antiviral Evaluation of Novel 6′(α)-Methyl-Branched Carbovir Analogues
作者:Jin Woo Kim、Joon Hee Hong
DOI:10.1002/ardp.200500118
日期:2005.9
A new stereoselective synthesis of 6′‐branched Carboviranalogues was accomplished in this study. The introduction of a methyl group in the requisite 6′(α)‐position was carried out using an ester enolate alkylation (LHMDS, CH3I). The desired cyclopentenol 7 was synthesized via a Felkin‐Anh‐controlled Grignard addition and ring‐closing metathesis using second‐generation Grubbs' catalyst. The natural