Synthesis of (6R,7R,8S,8aR)-6,7,8-trihydroxyperhydro[1,3]thiazolo[3,2-a]pyridine and its 8aS-epimer. Novel, biologically active analogs of castanospermine
摘要:
Concise syntheses of the title compounds 4a and 4b have been achieved from D-(-)-arabinose. In the first route the dithioacetal 9 was converted via the tosylate 10 to the hemiacetal 11 which was reacted with amino-ethanethiol.HCl to give a mixture of compounds 4. Alternatively, the thiazolidines 6 were cyclized (using Ph3P, CCl4, Et3N) to give 4a,b in a two-step approach without recourse to protecting groups. Castanospermine analogs 4 show in vitro activity against HIV at muM concentrations.
Synthesis of (6R,7R,8S,8aR)-6,7,8-trihydroxyperhydro[1,3]thiazolo[3,2-a]pyridine and its 8aS-epimer. Novel, biologically active analogs of castanospermine
摘要:
Concise syntheses of the title compounds 4a and 4b have been achieved from D-(-)-arabinose. In the first route the dithioacetal 9 was converted via the tosylate 10 to the hemiacetal 11 which was reacted with amino-ethanethiol.HCl to give a mixture of compounds 4. Alternatively, the thiazolidines 6 were cyclized (using Ph3P, CCl4, Et3N) to give 4a,b in a two-step approach without recourse to protecting groups. Castanospermine analogs 4 show in vitro activity against HIV at muM concentrations.