Synthesis and chemiluminescence of 1,3-disubstituted pyrazolo[4′,3′:5,6]pyrido[2,3-d]pyridazine-5,8(6h,7h)-diones and related compounds
作者:Yoshinori Tominaga、Noriko Yoshioka、Seigo Kataoka、Norihito Aoyama、Toshiyuki Masunari、Akira Miike
DOI:10.1016/0040-4039(95)01862-c
日期:1995.11
[4′,3′:5,6]pyrido[2,3-d]pyridazine-5,8(6H,7H)-diones (7a-s) in good yields. These tricyclic pyridazine derivatives were evaluated for chemiluminescence. Some were found to be more efficient than luminol in light production. 4-Amino-3-methylsufonyl-1-phenyl-1H-pyrazolo [4′,3′:5,6]pyndo[2,3-d]pyridazine-5,8(6H,7H)-dione(7r) showed the greatest chemiluminescence intensity derivatives in the presence of H2O2
1,3-二取代的5-氨基吡唑-4-腈衍生物(3a-o)与乙炔二羧酸二甲酯在碳酸钾存在下于二甲亚砜中的反应,得到相应的二甲基1,3-二取代的吡唑并[3,4-b]吡啶-5,6-二羧酸盐(4a-o)与过量的水合肼在乙醇中回流反应,然后在250-300°C加热,得到1,3-二取代的4-氨基-1H-吡唑醇[4' ,3':5,6] pyrido [2,3-d] pyridazine-5,8(6H,7H)-diones(7a-s)的产率很高。评价这些三环哒嗪衍生物的化学发光。发现一些在发光方面比鲁米诺更有效。4-Amino-3-methylsufonyl-1-phenyl-1H-pyrazolo [4',3':5,6] pyndo [2,3-d]哒嗪-5,8(6H,7H)-dione(7r)在过氧化物酶H 2 O 2存在下,在磷酸盐缓冲液pH 8.0中显示出最大的化学发光强度衍生物