申请人:Affymax Technologies N.V.
公开号:US05622944A1
公开(公告)日:1997-04-22
Compositions and methods are provided for enhanced transdermal electrotransport of 17-hydroxy sterol compounds, including testosterone. The parent sterols are modified at the 17-hydroxy position by covalent attachment of a charged chemical modifier. The chemical modifier provides the parent sterol with enhanced transport properties and is hydrolyzed under physiological conditions to release the active parent compound. The composition comprises a 17-hydroxy sterol/chemical modifier complex, more generally represented by the formula (sterol--O--)C(O)--R--N(R.sup.1)(R.sup.2)(R.sup.3).sup.+. The portion of the complex derived from the chemical modifier is indicated by "C(O)--R--N(R.sup.1)(R.sup.2)(R.sup.3).sup.+ ", where N(R.sup.1)(R.sup.2)(R.sup.3).sup.+ represents a quaternary ammonium group and R.sup.1, R.sup.2, and R.sup.3 are independently selected from the group consisting of lower alkyl, alkyl, aryl, arylalkyl, cycloalkyl, heteroalkyl, and heteroarylalkyl; or R.sup.1 and R.sup.2 together with the nitrogen to which they are attached form a substituted heterocycle and R.sup.3 is lower alkyl, and R is a linking moiety, linking the (sterol--O)--C(O)-- to the nitrogen atom.
提供了用于增强17-羟基甾醇化合物(包括睾酮)经皮电输送的组合物和方法。通过在17-羟基位置上通过共价连接带电化学修饰剂来修改母体甾醇。化学修饰剂为母体甾醇提供增强的输送性能,并在生理条件下水解以释放活性母体化合物。该组合物包括17-羟基甾醇/化学修饰剂复合物,更一般地表示为公式(甾醇-O-)C(O)-R-N(R1)(R2)(R3)+。从化学修饰剂衍生的复合物部分由“C(O)-R-N(R1)(R2)(R3)+”表示,其中N(R1)(R2)(R3)+代表季铵基团,R1、R2和R3分别独立地选自较低的烷基、烷基、芳基、芳基烷基、环烷基、杂原子烷基和杂原子芳基烷基组成的群;或者R1和R2与它们连接的氮一起形成取代的杂环,R3是较低的烷基,R是一个连接基团,将(甾醇-O)-C(O)-连接到氮原子。