参考文献:
VITAE PHARMACEUTICALS, INC. BOEHRINGER INGELHEIM INTERNATIONAL GMBH LEFTHERIS, Katerina ZHUANG, Linghang TICE, Colin, M. SINGH, Suresh, B. YE, Yuanjie XU, Zhenrong HIMMELSBACH, Frank ECKHARDT, Matthias Patent: WO11/15976 A1, 11 Location in patent: Page/Page column 69 WO 11/15976 A1