A composition showing an improved bioavailability rate of pantothenic acid derivatives represented by the following general formula and improved storage stability and being applicable as drugs over an enlarged range:
wherein R1 and R2 are the same or different and each represents a hydrogen atom or a hydroxyl-protective group;
R3 represents a saturated or unsaturated, linear, branched or cyclic C5-25 monovalent aliphatic hydrocarbon group optionally substituted by an aromatic group, or an amino group represented by the formula -N(R4)R5 (wherein R4 represents a saturated or unsaturated, linear, branched or cyclic C5-25 monovalent aliphatic hydrocarbon group; and R5 represents a hydrogen atom or a saturated or unsaturated, linear, branched or cyclic monovalent aliphatic hydrocarbon group optionally substituted by an aromatic group);
A represents a saturated or unsaturated, linear, branched or cyclic C2-16 divalent aliphatic hydrocarbon group, divalent aromatic hydrocarbon group or divalent heteroaryl group optionally substituted by an aromatic group;
one of X and Y represents an amino group represented by the formula -N(R6)- while the other represents -O-, -S- or an amino group represented by the formula -N(R7)- (wherein R6 and R7 represent each a hydrogen atom or a lower alkyl group); and
n is an integer of from 1 to 4. The pantothenic acid derivative represented by the above general formula (I) is dissolved in a neutral or alcoholic ester and a nonionic surfactant is added thereto to give the absorption-enhancing composition.
一种通式如下的
泛酸衍
生物组合物,其
生物利用率有所提高,贮存稳定性有所改善,可在更大范围内作为药物使用:
其中 R1 和 R2 相同或不同,各自代表氢原子或羟基保护基团;
R3 代表饱和或不饱和、线性、支链或环状 C5-25 单价脂肪族烃基,可选择被芳香族基团取代,或由式 -N(R4)R5 所代表的
氨基(其中 R4 代表饱和或不饱和、线性、支链或环状 C5-25 单价脂肪族烃基;R5 代表氢原子或饱和或不饱和、线性、支链或环状单价脂肪族烃基,可选择被芳香族基团取代);
A 代表饱和或不饱和、线性、支链或环状 C2-16 二价脂肪族烃基、二价芳香族烃基或任选被芳香族基团取代的二价杂芳基;
X 和 Y 中的一个代表由式-N(R6)-表示的
氨基,而另一个代表-O-、-S-或由式-N(R7)-表示的
氨基(其中 R6 和 R7 分别代表氢原子或低级烷基);以及
将上述通式(I)所代表的
泛酸衍
生物溶解在中性酯或醇酯中,再加入非离子表面活性剂,即可得到增强吸收的组合物。