1-[2,4-Dihydroxy-6-methoxy-3-(3-methyl-2-buten-1-yl)phenyl]-3-(4-hydroxyphenyl)-2-propen-1-one (Xanthohumol) , prenylchacone flavonoid, is a natural product with multi-biofunctions purified from Hops Humulus lupulus,is effective against HIV-1 and might serve as an interesting lead compound. It may represent a novel chemotherapeutic agent for HIV-1 infection.