Bibliografisk träff 2007-08-16 Two new alkaloids and active anti-hepatitis B virus constituents from Hypserpa nitida. Cheng P, Ma YB, Yao SY, Zhang Q, Wang EJ, Yan MH, Zhang XM, Zhang FX, Chen JJ. Bioorg Med Chem Lett · research support, non-u.s. gov't; journal article · DOI 10.1016/j.bmcl.2007.08.027