Lithiation-mediated CC silyl and stannyl migrations observed in 6-chloro-9-(β-d-ribofuranosyl)purine
作者:Keisuke Kato、Hiroyuki Hayakawa、Hiromichi Tanaka、Hiroki Kumamoto、Tadashi Miyasaka
DOI:10.1016/0040-4039(95)01302-x
日期:1995.9
Lithiation of 9-[2,3,5-tris-O-(tert-butyldimethylsilyl)-beta-D-ribofuranosyl]-6-chloropurine (1) with LTMP (lithium 2,2,6,6-tetramethylpiperidide) and a subsequent reaction with either Me(3)SiCl or Bu(3)SnCl was found to effect C-2-substitution, as a result of ''silyl or stannyl migration'' from C-8 to C-2 position. Transformation of the resulting 2-stannyl derivative (8) to 2-substituted adenosines was also examined briefly.