申请人:Odontex, Inc.
公开号:US04980378A1
公开(公告)日:1990-12-25
Biodegradable absorption enhancers, especially useful in pharmaceutical formulations, are compounds having the formula ##STR1## wherein R is hydrogen, C.sub.1 -C.sub.7 alkyl, benzyl or 4-hydroxybenzyl; n is a whole number from 4 to 18 inclusive; R.sub.1 and R.sub.2 are independently selected from hydrogen and C.sub.1 -C.sub.7 alkyl, or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached are combined to form a substituted or unsubstituted heterocycloalkyl radical having a total of 5 to 7 ring atoms, optionally including a hetero ring atom selected from oxygen, sulfur and nitrogen in addition to the indicated nitrogen atom, the substituents when present being one to three C.sub.1 -C.sub.7 alkyl radicals, which may be the same or different; and R.sub.3 and R.sub.4 are independently selected from hydrogen, methyl and ethyl.
可生物降解的吸收增强剂,在制药配方中特别有用,是具有以下结构式的化合物:##STR1## 其中R为氢、C.sub.1 -C.sub.7烷基、苄基或4-羟基苄基;n为4至18的整数;R.sub.1和R.sub.2分别选自氢和C.sub.1 -C.sub.7烷基,或者R.sub.1和R.sub.2与它们连接的氮原子一起结合形成一个总共有5至7个环原子的取代或未取代的杂环烷基基团,可选地包括除所示氮原子外选择的氧、硫和氮之一的杂环原子,取代基在存在时为一个至三个C.sub.1 -C.sub.7烷基基团,可以相同也可以不同;R.sub.3和R.sub.4分别选自氢、甲基和乙基。