Rangarajan, Meera; Kim, Jung Sun; Sim, Sai-Peng; Liu, Angela; Liu, Leroy F.; LaVoie, Edmond J.
Bioorganic and Medicinal Chemistry, 2000 , vol. 8, # 11 p. 2591 - 2600

Eli Lilly and Company
Patent: US4264600 A1, 1981 ;

Rusanova, Julia; Pilkington, Melanie; Decurtins, Silvio
Chemical Communications, 2002 , # 19 p. 2236 - 2237