One new nucleoside and three furanpentanone derivatives from the aerial part of Rubia cordifolia L

One new nucleoside 1 and three new furanpentone derivatives 2‒4 were isolated from the aerial part of Rubia cordifolia. Their structures were established using spectroscopic methods. Compounds 1 and 4 exhibited inhibition of NO production with IC50 values of 27.5 and 19.8 μM, respectively.