通过使用低温,动力学控制的甲硅烷基希尔伯特·约翰逊反应,由4-氰基-3(2H)-哒嗪酮(4)制备了4-氰基-3-氧化-1-β-D-呋喃呋喃糖基吡啶并鎓(10a)然后用甲醇中的NaHCO3解封所得的三乙酸酯衍生物8a。10a显然是嘧啶核苷的内消旋类似物的第一个例子。发现它是小鼠体内的4-氰基-3(2H)-哒嗪酮(4)的尿代谢产物。10a具有25-50 mg / kg ED50的小鼠体内对全身性大肠杆菌感染的革兰氏阴性抗菌活性。合成了一系列4-取代的3-氧化吡啶并鎓核糖核苷11a-h,作为10a的类似物。发现4-氯-3-氧化-1-β-D-呋喃呋喃糖基吡啶并鎓鎓对E的活性是10a的几倍。
The invention is concerned with novel aza-pyridopyrimidinone derivatives of formula (I):
wherein R
1
, R
2
, R
3
, R
4
, R
5
, X
1
, X
2
, X
3
, Y, Z, m and n are as defined in the description and in the claims, as well as physiologically acceptable salts and esters thereof. These compounds are HM74A agonists and can be used in treating or preventing diseases which are modulated by HM74A agonists.
Heilmittelchemische Studien in der heterocyclischen Reihe. 5. Mitteilung. Pyridazine II. Eine neue Pyridazinsynthese
作者:P. Schmidt、J. Druey
DOI:10.1002/hlca.19540370116
日期:——
A new synthesis of 6-pyridazones starting from three single components is described. The starting materials are (1) and α-diketone, α-ketoaldehyde or glyoxal, (2) a carbonic acid having an active methylene group in α-position, and (3) hydrazine or a monosubstituted hydrazine.
Reactions of 4-cyano-3(2,H)-pyridazinone (1) and tetrazolo[1,5-b]pyridazine-8-carbonitrile (4) with phenylmagnesium chloride were found to be governed by formal replacement of the nitrile function to afford the phenyl-substituted pyridazine derivatives 3 and 5 rather than the expected aryl heteroaryl ketones.
发现4-氰基-3(2,H)-哒嗪酮(1)和四唑并[1,5 - b ]哒嗪-8-腈(4)与苯基氯化镁的反应是由腈官能团的正式取代控制的。得到苯基取代的哒嗪衍生物3和5,而不是预期的芳基杂芳基酮。
Mesoionic pyridazine and pyridine nucleosides. An unusual biologically active nucleoside metabolite
作者:Ronald E. Bambury、Daniel T. Feeley、Gerald C. Lawton、John M. Weaver、James Wemple
DOI:10.1039/c39840000422
日期:——
An in vivo process in mice leading to the mesoionic 3-oxidopyridazinium riboside, (3b), can also be accomplished via a kinetically controlled silyl Hilbert-Johnson reaction.
Heilmittelchemische Studien in der heterocyclischen Reihe. 19. Mitteilung. Pyridazine X. Cyan-pyridazin-Derivate mit analgetischer Wirkung
作者:P. Schmidt、J. Druey
DOI:10.1002/hlca.19570400622
日期:——
having in position 5 a cyano, in 3 and 4 alkyl, and in 1 a methyl group have shown a high analgetic activity in animals. The 6-methoxypyridazine XX, isomeric with the first named compound, is the only pyridazine derivative which has shown similar analgetic activity.