Thioic acids as building block for polythioesters

Details Thioic acids as building block for polythioesters Thioic acids as building block for polythioesters

C - Chemistry, Metallurgy

07

C

C07C 327/06 (2006.01) A61K 9/50 (2006.01) C07C 327/22 (2006.01) C08G 75/26 (2006.01)

Patent

CA 2743980

The present invention relates to thioic acids according to formula (II) suitable as building block for polythioesters; Wherein X is O, N or S and whereby R1 is chosen from (-CH2-)2, -CH2-O-CH2- or (-CH2-)3, R2 is preferably chosen from a biodegradable oligomer or polymer chosen from poly (lactide) (PLLA), polyglycolide (PGA), co-oligomers or copolymers of PLA and PGA (PLGA), poly(anhydrides), poly(trimethylenecarbonates), poly(orthoesters), poly(dioxanones), poly(.epsilon.-caprolactones) (PCL) or polyesteramides and n>1.

La présente invention porte sur des acides thioïques répondant à la formule (II) appropriés comme synthons pour des polythioesters ; dans laquelle formule X représente O, N ou S et R1 est choisi parmi (-CH2-)2, -CH2-O-CH2- ou (-CH2-)3, R2 est de préférence choisi parmi un oligomère ou polymère biodégradable choisi parmi le poly(lactide) (PLLA), le polyglycolide (PGA), les co-oligomères ou copolymères de PLA et de PGA (PLGA), les poly(anhydrides), les poly(carbonates de triméthylène), les poly(orthoesters), les poly(dioxanones), les poly(e-caprolactones) (PCL) ou les polyesteramides et n > 1.

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