Compositions of iodobenzoic acid derivatives in filmforming materials for visualization of the gastrointestinal tract
申请人:NYCOMED IMAGING AS
公开号:EP0614669A2
公开(公告)日:1994-09-14
Disclosed are x-ray contrast compositions for oral or retrograde examination of the GI tract comprising a polymeric material capable of forming a coating on the GI tract, said polymeric material having atoms containing polarizable electrons thereon, in combination with a divalent cation; and an x-ray contrast producing agent of the formula
wherein
Z = H, halo, C1-C20 alkyl, cycloalkyl, lower alkoxy, cyano, where the alkyl and cycloalkyl groups can be substituted with halogen or halo-lower-alkyl groups;
R = C1-C25 alkyl, cycloalkyl, or halo-lower-alkyl, optionally substituted with halo, fluoro-lower-alkyl, aryl, lower-alkoxy, hydroxy, carboxy, lower-alkoxy carbonyl or lower-alkoxy-carbonyloxy, (CR1R2)p - (CR3 = CR4)mQ, or (CR1 R2)p - C ≡ C - Q;
Ri, R2, R3 and R4 are independently lower-alkyl, optionally substituted with halo;
x is 1-3
y is 1-4;
n is 1-5;
m is 1-15;
p is 1-10; and
Q is H, lower-alkyl, lower-alkenyl, lower-alkynyl, lower-alkylene, aryl, or aryl-lower alkyl; in a pharmaceutically acceptable carrier and a method of its use in diagnostic radiology of the GI tract.
本发明公开了用于消化道口腔或逆行检查的 X 射线造影剂组合物,该组合物包括一种可在消化道上形成涂层的聚合材料,所述聚合材料上有含有可极化电子的原子,并与二价阳离子结合;以及一种X射线造影剂,其式为
其中
Z = H、卤素、C1-C20 烷基、环烷基、低级烷氧基、
氰基,其中烷基和环烷基可被卤素或卤代低级烷基取代;
R = C1-C25 烷基、环烷基或卤代低烷基,可任选被卤、
氟代低烷基、芳基、低烷氧基、羟基、羧基、低烷氧基羰基或低烷氧基羰氧基、(CR1R2)p - (CR3 = CR4)mQ 或 (CR1 R2)p - C ≡ C - Q 取代;
Ri、R2、R3 和 R4 独立地是低级烷基,可选择被卤代取代;
x 是 1-3
y 是 1-4;
n 是 1-5
m 是 1-15;
p 是 1-10;以及
Q 是 H、低级烷基、低级烯基、低级炔基、低级亚烷基、芳基或芳基-低级烷基;在药学上可接受的载体中,及其在消化道放射诊断中的使用方法。