Md. Rozwadowska et A. Sulima, Synthesis of isoquinoline alkaloid, (+/-)-salsolidine, using thiazolino[2,3-a]isoquinolinone S-oxide as intermediate, POL J CHEM, 75(12), 2001, pp. 1847-1852
Thiazolino[2,3-a] isoquinlinones have been oxidized to the corresponding S-
oxides and their I Ob-methyl derivatives desulfurized with Raney nickel to
give (+/-) N-acyl salsolidine. Base-catalyzed hydrolysis of the N-acetyl de
rivative afforded (+/-)-salsolidine. C-Methylation reactions of the title h
eterocyclic system have been investigated throughly. Stereochemistry of the
synthesized compounds has been established.