Moormann, Alan E.; Metz, Sue; Toth, Mihaly V.; Moore, William M.; Jerome, Gina; Kornmeier, Christine; Manning, Pamela; Hansen Jr., Donald W.; Pitzele, Barnett S.; Webber
Bioorganic and Medicinal Chemistry Letters, 2001 , vol. 11, # 19 p. 2651 - 2653

Tomita
Yakugaku Zasshi, 1951 , vol. 71, p. 1053,1057
Chem.Abstr., 1952 , p. 5044

Brookes et al.
Journal of the Chemical Society, 1957 , p. 3165,3171