Ahmar; Bloch; Bortolussi
Synthetic Communications, 1991 , vol. 21, # 8-9 p. 1071 - 1074

Madsen; Braeuner-Osborne; Frydenvang; Hvene; Johansen; Nielsen; Sanchez; Stensbol; Bischoff; Krogsgaard-Larsen
Journal of Medicinal Chemistry, 2001 , vol. 44, # 7 p. 1051 - 1059

Givaudan Roure (International) SA
Patent: US6222062 B1, 2001 ;

Brettle, Roger; Dunmur, David A.; Farrand, Louise D.; Hindley, Nigel J.; Marson, Charles M.
Chemistry Letters, 1993 , # 10 p. 1663 - 1666