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 (—CH
2
—)
2
, —CH
2
—O—CH
2
— or (—CH
2
—)
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(ε-caprolactones) (PCL) or polyesteramides and n>1.
本发明涉及符合式(II)的
硫酸的使用作为聚
硫酯的构建块;其中X为O、N或S,R1选自(—
CH2—)2、— —O— —或(— —)3,R2优选选自可
生物降解的寡聚物或聚合物,选自聚
乳酸(PL
LA)、聚
乙二醇酸(
PGA)、P
LA和
PGA(PLGA)的共寡聚物或共聚物、聚酸酐、聚三甲基
碳酸酯、聚正酯、聚
二噁烷酮、聚
ε-己内酯(PCL)或聚酯酰胺,n>1。