rhodamine, tetramethylrhodamine, BODIPY, dansyl, and nitrobenzoxadiazole (NBD)). On the isolated guinea pig ileum and in a Ca(2+) assay on U373MG human glioblastoma cells the highest H(1) antagonistic activities were found in 5- and 6-carboxyfluorescein labeled compounds with hexa- and octamethylene spacers and in an analogous NBD-aminohexanoyl derivative (pA(2) or pK(B) values in the range: 8.3-9.0; compared
荧光标记的
组胺H(1)受体拮抗剂的合成方法是,先从N-脱甲基甲
吡胺开始,引入ω-
氨基烷基链(长度为2-8个亚甲基),然后用各种荧光团(
荧光素,
萘荧光素)衍生化NH(2)末端基团。 ,若丹明,四甲基若丹明,BODIPY,丹磺酰基和
硝基苯并二唑(NBD))。在分离的豚鼠回肠和U373MG人胶质母细胞瘤细胞的Ca(2+)分析中,在带有六和八亚甲基间隔基的5-和
6-羧基荧光素标记的化合物以及类似的NBD中发现了最高的H(1)拮抗活性。 -
氨基己基衍
生物(pA(2)或pK(B)值在8.3-9.0范围内;而美比拉明则为9.3-9.4)。