Stereoselective and Efficient Synthesis of (3<i>R</i>,3a<i>S</i>,6a<i>R</i>)-Hexahydrofuro[2,3-<i>b</i>]furan-3-ol
作者:Peter J. L. M. Quaedflieg、Bart R. R. Kesteleyn、Piet B. T. P. Wigerinck、Nicolaas M. F. Goyvaerts、Robert Jan Vijn、Constantinus S. M. Liebregts、Jaap H. M. H. Kooistra、Claudia Cusan
DOI:10.1021/ol052554i
日期:2005.12.1
[GRAPHICS]Two short and efficient synthesis routes have been developed for bis-THF-alcohol 2, a key building block of the investigational HIV protease inhibitor TMC114 (1). Using S-2,3-O-isopropylideneglyceraldehyde (4) as the source of chirality, both routes are based on a diastereoselective Michael addition of nitromethane to give predominantly the syn congeners 6 followed by a Nef oxidation and cyclization to afford lactone acetals 8, which are reduced and cyclized to give 2.