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。
Copper-Catalyzed Guanidinylation of Aryl Iodides: The Formation of N,N′-Disubstituted Guanidines
摘要:
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.
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
A process for producing n-phosphonomethylglycine derivatives and herbicidal compounds and compositions prepared thereby
申请人:Geshuri Laboratories Ltd.
公开号:EP0098034A2
公开(公告)日:1984-01-11
The invention provides a process for producing water-soluble mono and di-N-Phosphonomethylglycine amine and iminourea salts from N-phosphonomethyliminodiacetic acid derivatives comprising oxidizing an aryl substituted iminourea salt of N-phosphonomethyliminodiacetic acid of the general formula VI
wherein Ar1 and Ar2 are each independently selected from the group consisting of phenyl, alkylphenyl and halophenyl to form a N-phosphonomethylglycine iminourea salt of the general formula VII
reacting the salt of formula VII with an amine, iminourea, diamine, or diiminourea having a molecular weight below 600 and a pKa above 10 in aqueous solution and separating the resulting water insoluble aryl iminourea from the resulting water soluble N-phosphonomethyl-glycine salt product. The invention also provides herbicidal N-phosphonomethylglycine compounds and compositions prepared by the above process.
本发明提供了一种从 N-膦酰甲基亚氨基二乙酸衍生物生产水溶性单-和双-N-膦酰甲基甘氨酸胺和亚氨基脲盐的工艺,包括氧化通式 VI 的 N-膦酰甲基亚氨基二乙酸的芳基取代的亚氨基脲盐
其中 Ar1 和 Ar2 各自独立地选自苯基、烷基苯基和卤化苯基组成的组,形成通式 VII 的 N-膦酰甲基甘氨酸亚氨基脲盐
在水溶液中将式 VII 的盐与分子量低于 600、pKa 高于 10 的胺、亚氨基脲、二胺或二亚氨基脲反应,并将所得的不溶于水的芳基亚氨基脲与所得的水溶性 N-膦酰甲基甘氨酸盐产物分离。本发明还提供了通过上述工艺制备的除草 N-膦酰甲基甘氨酸化合物和组合物。
Process for producing N-phosphonomethylglycine acid
申请人:Geshuri Laboratories Ltd.
公开号:EP0125363A1
公开(公告)日:1984-11-21
The invention provides a process for producing N-phosphonomethylglycine acid (NPMG) comprising (a) oxidizing an N-(phosphonomethyl) iminodiacetic acid (NPMIDA) derivative of the general formula I
wherein n is 1 or 2 and Rs, R5 . R6 and R6' are independently
or an aryl, cycloalkyl or straight or branched chain alkyl or alkenyl group optionally substituted by hydroxy or halogen, or an alkylaryl group, provided that at least one of R5, Rs', R6 or R6' is hydrogen, to produce a corresponding iminourea salt of NPMG and then (b) reacting the salt with an acid stronger than NPMG whereby NPMG is produced and there remains in solution the iminourea salt of the stronger acid.