制备了许多具有潜在抗癌活性的异恶唑并[4,3- d ]嘧啶和异恶唑并[4,5- d ]嘧啶的衍生物。缩合的与4-氨基-5-苯甲酰基异恶唑-3-羧酸酰肼原甲酸乙酯,然后与不同的胺反应,得到一系列的3-苯甲酰基-7-氧代-7 H-异恶唑并[4,3 - d ]嘧啶-6-基-芳基-甲form。一系列5-氨基甲基-7-苯基-异恶唑并[4,5 - d ]嘧啶-3-羧酰胺得自4-氨基-5-苯甲酰基异恶唑-3-羧酰胺与乙腈,氯乙腈与气态氯化氢。测试了其中一些化合物的细胞毒性活性。J.杂环化学。(2010)。
Synthesis and pharmacological screening of derivatives of isoxazolo[4,5-d]pyrimidine
摘要:
A number of derivatives of isoxazolo[4,5-d]pyrimidine were prepared with structures similar to that of purine. Condensation of the hydrazide of 4-amino-5-benzoylisoxazolo-3-carboxylic acid 2 with ethyloxalyl chloride followed by cyclization gave 3-oxdiazolo-[1,3,4]-4-amino-5-benzoylisoxazole 7 which, upon cyclization with acetonitrile followed by reactions with different amines, gave derivatives of isoxazolo[4,5-d]pyrimidine 9 and 10d-g. Compounds 8g and 10f were tested for their effects on the immune response in the mouse model. Both compounds significantly inhibited the humoral immune response in vivo to sheep erythrocytes at a dose of 100 jig, whereas in the delayed type hypersensitivity assay a suppressive activity was shown only by compound 10f. In addition, compound 8g inhibited and compound 10f stimulated the proliferative response of mouse splenocytes to concanavalin A. The results indicated that compound 10f was a universal inhibitor of the immune response, while compound 8g selectively suppressed the humoral immune response. (C) 2008 Published by Elsevier Masson SAS.