Synthesis and biological evaluation of 12-N-benzenesulfonyl matrinic ether derivatives as anti-coxsackievirus B3 agents

12-N-m-Cyanobenzenesulfonyl matrinic butyl methyl ether is a potent anti-coxsackievirus B3(CVB3) agent bearing a novel structure skeleton. Taking this compound as a lead, totally 15 novel target compounds have been synthesized and evaluated for the anti-CVB3 activities using CPE method. Structureactivity relationship (SAR) demonstrated that the shorten-length of 11-side chain was not helpful for keeping the good anti-virus activity. Among the newly synthesized compounds, compound c1 displayed a good anti-CVB3 activity with the IC₅₀ of 7.1 μmol·L^-1 and SI of 35.5, similar to that of the lead. The SAR results provided useful information for further optimization of these compounds in the molecular structure.