N-2-chlorobenzyl-2-oxo and N-2-chlorobenzyl-2,2-dioxo-1,2,3-oxathiazolidine derivatives, their preparation and synthesis of thieno[3,2-c]pyridine derivatives therefrom.

摘要

Compounds of the formula: wherein: A is oxo or dioxo; R<1>, R<2> and R<3> are independently hydrogen or lower alkyl of one to six carbon atoms; R<4>, R<5>, R<6> and R<7> are independently hydrogen, lower alkyl of one to six carbon atoms, alkoxy, acyl or halo; are advantageously converted to thieno[3,2-c]pyridine derivatives and the pharmaceutically acceptable salts thereof, particularly ticlopidine hydrochloride.