BAYER HEATHCARE AG
Patent: US2007/66615 A1, 2007 ;
Location in patent: Page/Page column 12-13 ;

Ciba-Geigy Corporation
Patent: US4634713 A1, 1987 ;
US 4634713 A

Stabile, Paolo; Lamonica, Alessandro; Ribecai, Arianna; Castoldi, Damiano; Guercio, Giuseppe; Curcuruto, Ornella
Tetrahedron Letters, 2010 , vol. 51, # 24 p. 3232 - 3235