Kinoshita, Takeshi; Ichinose, Koji; Sankawa, Ushio
Tetrahedron Letters, 1990 , vol. 31, # 50 p. 7355 - 7356

Singh, Om V.; Muthukrishnan; Sunderavadivelu
Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2005 , vol. 44, # 12 p. 2575 - 2581