参考文献:
ASTEX THERAPEUTICS LIMITED WOOLFORD, Alison Jo-Anne HOWARD, Steven BUCK, Ildiko Maria CHESSARI, Gianni JOHNSON, Christopher Norbert TAMANINI, Emiliano DAY, James Edward Harvey CHIARPARIN, Elisabetta HEIGHTMAN, Thomas Daniel FREDERICKSON, Martyn GRIFFITHS-JONES, Charlotte Mary Patent: WO/4376 A, Location in patent: Page/Page column 3