Dideoxy-2’-fluoro-3’-hydroxymethylarabinofuranosylthymine 10 and cytosine 12 were synthesized from L-xylose and were found to be inactive against HIV-1 in acu
A WC-supported S_2O 2-_8/ZrO_2(PSZ) catalyst was prepared and characterized by means of XRD, BET, FTIR and XPS. The isomerization of n-pentane over the catal
From the dried aerial part of Parepigynum funingesis Tsiang et P. T. Li (Apocynaceae), a new cardiac glucoside, named parefuningoside (1) had been isolated. It