在Pd II / Cu(II)羧酸盐/ CO的存在下,依靠双重C–N键裂解策略,可实现具有高结构和功能多样性的胍衍生物的高效非酶分解为苯胺产物。在这种分解过程中,Pd II物质,Cu(II)羧酸盐和CO的协同作用不仅提供N-酰化剂,而且还提供引发该C–N键裂解序列的引发剂。目前的结果表明,Pd II / Cu(II)羧酸盐/ CO系统为非反应性C–N单键的高选择性裂解提供了一种方便实用的方法。
Synthesis and structure-activity relationships of N,N'-di-o-tolylguanidine analogs, high-affinity ligands for the haloperidol-sensitive .sigma. receptor
作者:Michael W. Scherz、Michelle Fialeix、James B. Fischer、N. Laxma Reddy、Alfred C. Server、Mark S. Sonders、Barbara C. Tester、Eckard Weber、Scott T. Wong、John F. W. Keana
DOI:10.1021/jm00171a016
日期:1990.9
2-CH3C6H5). Replacement of one or both aryl rings with certain saturated carbocycles (e.g. cyclohexyl, norbornyl, or adamantyl) leads to a significant increase in affinity. By combining the best aromatic and best saturated carbocyclic substituents in the same molecule, we arrived at some of the most potent sigma ligands described to date (e.g. N-exo-2-norbornyl-N'-(2-iodophenyl)guanidine, IC50 = 3 nM vs [3H]-3)
着眼于新型非典型抗精神病药的开发,我们研究了氟哌啶醇敏感的sigma受体的N,N'-二-邻甲苯基胍(DTG,3)及其同类物的结构亲和力关系。合成了许多DTG类似物,并在豚鼠脑膜匀浆的体外放射性配体置换实验中使用了高sigma特异性放射性配体[3H] -3和[3H]-(+)-3-(3-羟苯基)进行了评估。 -N-(1-丙基)哌啶和苯环利定(PCP)受体特异性化合物[3H] -N- [1-(2-噻吩基)-环己基]哌啶和[3H]-(+)-5-甲基-10 ,11-二氢-5H-二苯并[a,d]环庚烯-5,10-亚胺。N,N'-二芳基胍对sigma受体的亲和力随邻位取代基的体积比C2H5大而增加。疏水取代基通常优于类似位置的亲水取代基。此外,电子中性取代基优于强电子给体或吸电子基团。只要胍的至少一侧带有优选基团(例如2-CH 3 C 6 H 5),通常就可以保持与σ受体的显着结合。用某些饱和的碳环(例
Synthesis and structure-activity studies of N,N'-diarylguanidine derivatives. N-(1-naphthyl)-N'-(3-ethylphenyl)-N'-methylguanidine: a new, selective noncompetitive NMDA receptor antagonist
作者:N. L. Reddy、Lain-Yen Hu、R. E. Cotter、J. B. Fischer、W. J. Wong、R. N. McBurney、E. Weber、D. L. Holmes、S. T. Wong
DOI:10.1021/jm00028a009
日期:1994.1
hylguanidine (40) showed high affinity for the NMDA receptor ion channel site (IC50 = 36 nM vs [3H]-3) and low affinity for sigma receptors (IC50 = 2540 nM vs [3H]-5). Selectivity for the NMDA receptor ion channel sites over sigma receptors appears to be dependent upon the structure of the additional substituents on the guanidine nitrogen atoms bearing the aryl groups. Methyl and ethyl substituents
Copper-Catalyzed Guanidinylation of Aryl Iodides: The Formation of <i>N,N′</i>-Disubstituted Guanidines
作者:Michelle Cortes-Salva、Be-Lan Nguyen、Javier Cuevas、Keith R. Pennypacker、Jon C. Antilla
DOI:10.1021/ol1002175
日期:2010.3.19
A copper-catalyzed cross-coupling reaction of guanidine nitrate with aryl iodides was used for the formation of N,N'-disubstituted guanidines to be used as potential therapeutics for strokes. A relatively inexpensive commercially available guanidine salt and a series of aryl iodides together with copper iodide and N,N-diethylsalicylamide as an efficient catalyst/ligand system provided a simple diarylation procedure.
Naunton, Journal of the Society of Chemical Industry, 1926, vol. 45, p. 378 T