Singh; Kumar Indian Journal of Chemistry - Section B Organic Chemistry Including Medicinal Chemistry, 1991 , vol. 30, # 2 p. 237 - 240 Title/Abstract Full Text View citing articles Show Details Lee, Young Bok; Park, Myung Hee; Folk, J. E. Journal of Medicinal Chemistry, 1995 , vol. 38, # 16 p. 3053 - 3061