Nambara,T. et al.
Chemical and Pharmaceutical Bulletin, 1970 , vol. 18, # 3 p. 474 - 480

Wang, Xingbin; Liu, Hui; Yan, Peiyun; Liu, Jinliang; Li, Yan; Sun, Qian; Wang, Cunde
Journal of Chemical Research, 2011 , vol. 35, # 5 p. 291 - 293

Dirscherl
Hoppe-Seyler's Zeitschrift fuer Physiologische Chemie, 1936 , vol. 239, p. 53,62

Gonzalez, A. G.; Jorge, Z. D.; Lopez Dorta, H.; Luis, F. Rodriguez
Tetrahedron Letters, 1981 , vol. 22, p. 335 - 336

Bulletin de la Societe Chimique de France, , vol. 131, # 6 p. 658 - 664

Bulletin de la Societe Chimique de France, , vol. 131, # 6 p. 658 - 664

Bocklage et al.
Journal of Biological Chemistry, 1953 , vol. 202, p. 27,28 Anm. 2

Searle and Co.
Patent: US2840577 , 1956 ;

Allan, Gillian M.; Lawrence, Harshani R.; Cornet, Josephine; Bubert, Christian; Fischer, Delphine S.; Vicker, Nigel; Smith, Andrew; Tutill, Helena J.; Purohit, Atul; Day, Joanna M.; Mahon, Mary F.; Reed, Michael J.; Potter, Barry V. L.
Journal of Medicinal Chemistry, 2006 , vol. 49, # 4 p. 1325 - 1345