On the basis of the 5,5'-bisvanillin scaffold, a series of compounds has been synthesized presenting symmetric or dissymmetric frames on each phenolic moiety. These frames are alpha,beta-unsaturated (fluoro)phosphonate and/or alpha,beta-unsaturated hydrazone(s) formed by coupling aldehydic with isoniazid or hydralazine. All compounds were tested for their ability to inhibit cell-mediated low-density