A novel stereospecific synthesis of (+)-muscarine and (+)-epi-muscarine has been achieved by utilizing d-glucose as a chiral precursor. The key steps of the synthesis involved stereospecific cyclization of 3,5-di-O-sulfonyl-d-glucofuranose derivatives into the corresponding 2,5-anhydrides, and stereospecific hydrogenation of 2,5-anhydro-l-threo-hex-2-enose ethylene acetal derivatives, thus providing
A divergent synthesis of two new muscarine analogues bearing the (5S)-dioxolanyl isosteric group was achieved starting from d-glucose, enabling access to libraries of potentialmuscarinicagonists or antagonists. The key step of the synthesis involved a regioselective epoxide ring opening in 2,5:3,4-dianhydro derivatives 5 and 15 with LiAlH4, whereby the natural stereochemistry of (+)-muscarine (1)
Isonucleosides: Design and Synthesis of New Isomeric Nucleosides with Antiviral Potential
作者:Vasu Nair、Dorota G. Piotrowska、Maurice Okello、Jean Vadakkan
DOI:10.1080/15257770701490639
日期:2007.11.26
Isonucleosides discovered in our laboratory have been found to have interesting antiviral activity. The design, development of methodology, and stereochemical synthesis of new isonucteosides of anti-HCV interest are described. Antiviral results are cited.