Synthesis and Activity Against HBV of Novel <i>Tetra-</i>Seconucleoside Analogues of Dyphlline Having the Acyclic Chains of ACV and HBG
作者:El Sayed H. El Ashry、Laila F. Awad、Nagwa Rashed、Adel AbdelRahman、Hana A. Rasheed
DOI:10.1080/15257770701845329
日期:2008.2.8
Selectivealkylation of dyphylline (1) with (2-acetoxyethoxy)methyl bromide (2a) or 4-acetoxybutyl bromide (2b) afforded 3′-O-[(acetoxyethoxy)methyl]dyphylline (3a) and 3′-O-(4-acetoxybutyl)-dyphylline (3b), respectively. A trans esterification process rather than alkylation of the dihydroxy-propyl side chain in 1 had taken place during the reaction with 2-p-toluoyloxy)ethyl chloride (5) to afford