Singh
Synthesis, 1992 , # 3 p. 279 - 280

Singh
Synthesis, 1992 , # 3 p. 279 - 280

BOEHRINGER INGELHEIM INTERNATIONAL GMBH; BOEHRINGER INGELHEIM PHARMA GMBH and CO. KG
Patent: WO2008/144268 A1, 2008 ;
Location in patent: Page/Page column 43-44 ;
WO 2008/144268 A1

US4415580 A1, ;