J.B. Chemicals and Pharmaceuticals Limited
Patent: US2001/47023 A1, 2001 ;

Singh, Sunil K.; Reddy, P. Ganapati; Rao, K. Srinivasa; Lohray, Braj B.; Misra; Rajjak, Shaikh A.; Rao, Yeleswarapu K.; Venkateswarlu
Bioorganic and Medicinal Chemistry Letters, 2004 , vol. 14, # 2 p. 499 - 504