Two New Chromones from Cassia Auriculata and Their Antiviral Activity

Two new chromones, 2-(2-(furan-2-yl)-2-oxoethyl)-6-methoxy-8-(2-oxopropyl)-chromone (1) and 2-(2-(furan-2-yl)-2-oxoethyl)-5-methoxy-8-(2-oxopropyl)-chromone (2), along with four known ones (3–6) were isolated from the stem bark of Cassia auriculata. The new compounds were elucidated by means of spectroscopic methods, whereas the known compounds were identified by comparison with the data in the literature. Compounds 1 and 2 were tested for their anti-tobacco mosaic virus (anti-TMV) activities. The results revealed that 1 and 2 exhibited potential anti-TMV activities with inhibition rates of 28.2 and 30.5