Lee Ji-Ean, Hitotsuyanagi Yukio, Kim Ik-Hwi, Hasuda Tomoyo, Takeya Koichi
School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.
Bioorg Med Chem Lett. 2008 Jan 15;18(2):808-11. doi: 10.1016/j.bmcl.2007.11.030. Epub 2007 Nov 17.
A new bicyclic peptide of RA-series, RA-XVIII (3), was isolated from the roots of Rubia cordifolia L. Its structure was established to be a hydroxylated derivative of RA-VII by the semi-synthesis of 3 from deoxybouvardin, and its cytotoxicity against P-388 cells was 0.012 microg/mL.
从茜草(Rubia cordifolia L.)根中分离出一种新的RA系列双环肽,RA-XVIII(3)。通过由脱氧布瓦西丁半合成3确定其结构为RA-VII的羟基化衍生物,其对P-388细胞的细胞毒性为0.012微克/毫升。