申请人:Boerakker Mark Johannes
公开号:US20110301288A1
公开(公告)日:2011-12-08
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、—CH2—O—CH2—或(—CH2—)3,R2优选选自可生物降解的寡聚物或聚合物,选自聚乳酸(PLLA)、聚乙二醇酸(PGA)、PLA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。