申请人:Emisphere Technologies, Inc.
公开号:US20040106825A1
公开(公告)日:2004-06-03
The inventors have discovered that the disodium salt of certain delivery agents has surprisingly greater efficacy for delivering active agents than the corresponding monosodium salt. Furthermore, the inventors have discovered that the disodium salts of these delivery agents form solvates with ethanol and hydrates with water. The delivery agents have the formula
1
wherein
R
1
, R
2
, R
3
, and R
4
are indepedently hydrogen, halogen, C
1
-C
4
alkyl, or C
1
-C
4
alkoxy; and
R
5
is a substitued or unsubstituted C
2
-C
16
alkylene, substituted or unsubstituted C
2
-C
16
alkenylene, substituted or unsubstituted C
1
-C
12
alkyl(arylene), or substituted or unsubstituted aryl(C
1
-C
12
alkylene). The hydrates and solvates of present invention also have surprisingly greater efficacy for delivering active agents, such as heparin and calcitonin, than their corresponding monosodium salts and free acids. The present invention provides an alcohol solvate, such as ethanol solvate, of a disodium salt of a delivery agent of the formula above. The invention also provides a hydrate of a disodium salt of a delivery agent of the formula above. Preferred delivery agents include, but are not limited to, N-(5-chlorosalicyloyl)-8-aminocaprylic acid (5-CNAC), N-(10-[2-hydroxybenzoyl]amino)decanoic acid (SNAD), and sodium N-(8-[2-hydroxybenzoyl]amino)caprylate (SNAC). The invention also provides methods of preparing the disodium salt, ethanol solvate, and hydrate and compositions containing the disodium salt, ethanol solvate, and/or hydrate.
发明者发现,某些传递剂的二钠盐比相应的单钠盐具有更出色的传递活性剂的功效。此外,发明者还发现这些传递剂的二钠盐与乙醇形成溶剂合物,与水形成水合物。传递剂的公式为1,其中R1、R2、R3和R4分别为氢、卤素、C1-C4烷基或C1-C4烷氧基;R5是取代或未取代的C2-C16烷基、取代或未取代的C2-C16烯基、取代或未取代的C1-C12烷基(芳基)或取代或未取代的芳基(C1-C12烷基)。本发明的水合物和溶剂合物比它们的相应单钠盐和自由酸具有更出色的传递活性剂的功效,例如肝素和降钙素。本发明提供了公式如上的传递剂的二钠盐的醇溶剂,例如乙醇溶剂。本发明还提供了公式如上的传递剂的二钠盐的水合物。优选的传递剂包括但不限于N-(5-氯水杨酰基)-8-氨基己酸(5-CNAC)、N-(10-[2-羟基苯甲酰基]氨基)癸酸(SNAD)和N-(8-[2-羟基苯甲酰基]氨基)癸酸钠(SNAC)。本发明还提供了制备二钠盐、醇溶剂和水合物以及含有二钠盐、醇溶剂和/或水合物的组合物的方法。