Although 3 was regarded as an inactive or less effective (0–49% protection) compound when evaluated in their anti-HIV-1 assay, our data revealed another function of 3 and 29, as these two compounds could also bind to CD4 (the primary receptor of gp120), and may therefore act as potential dual-targeting agents to inhibit HIV-1 infection. The gene discussed is CD4; the disease is HIV-1 infection.