Tolstikov, G. A.; Lerman, B. M.; Umanskaya, L. I.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1982 , vol. 31, # 6 p. 1218 - 1220
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1982 , # 6 p. 1367 - 1370

Chemistry Letters, , vol. 37, # 6 p. 658 - 659

Heterocycles, , vol. 75, # 10 p. 2415 - 2420

Tetrahedron Letters, , vol. 27, # 37 p. 4473 - 4476

Ando, Wataru; Sonobe, Hideki; Akasaka, Takeshi
Tetrahedron Letters, 1986 , vol. 27, # 37 p. 4473 - 4476