TY - BOOK AU - Gordon M. Cragg AU - David G. I. Kingston AU - David J. Newman TI - Anticancer Agents from Natural Products SN - 9781439813836 PY - 2011/// CY - London PB - CRC Press KW - N2 - The approach to drug discovery from natural sources has yielded many important new pharmaceuticals inaccessible by other routes. In many cases the isolated natural product may not be an effective drug for any of several reasons, but it nevertheless may become a drug through chemical modification or have a novel pharmacophore for future drug design ER -