The lipase catalyzed resolution of trans-3,4-tetrahydrofuran and pyrrolidine bromohydrins by acylation or hydrolysis of their acylated derivatives has been studied. For both heterocycles, the best enantioselectivity was obtained using Candida antarctica lipase B as the catalyst in the hydrolytic processes. The enantiomerically pure bromohydrins are useful intermediates for the preparation of 3,4-fuctionalized cis-heterocycles. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis and anti HCMV activity of 3,4-disubstituted tetrahydrofuran derived nucleosides and nucleotides: A tethered series of PME derivatives
作者:Wei Wang、Haolun Jin、Nancy Fuselli、Tarek S. Mansour
DOI:10.1016/s0960-894x(97)10048-8
日期:1997.10
The synthesis of a novel series of 3,4-disubstituted tetrahydrofuran derived nucleosides and nucleotides analogues was achieved by a linear approach starting from azido intermediates 9 and 13. The trans cytosine nucleoside 19 emerged with good activity (IC50 = 3 mu g/mL) against HCMV in vitro with a selectivity index of 33. (C) 1997 Elsevier Science Ltd.