Synthesis and antiinflammatory activity of 4-amino-2-aryl-5-cyano-6-{3- and 4-(N-phthalimidophenyl)} pyrimidines
摘要:
Six new 4-amino-5-eyano-2,6-diarylpyrimidines 5a-h has been synthesized in a facile manner by reacting the appropriate arylamidines 4a-d with bisnitriles 3a-e. Reduction of the nitro group of 5a-e using Pd in ethyl acetate furnished 6a-e in good yields. Reaction of 6a-e individually with phthalic anhydride yielded 7a-e in good to excellent yields. The newly synthesized heterocycles were characterized by IR, H-1-NMR and mass spectral data. Compounds 5f-h and 7a-e were also evaluated against inflammation. Pyrimidines 5g, h exhibited better anti inflammatory activity when compared with acetylsalicylic acid (ASA). Phthalimide derivatives 7a-e also presented antiinflammatory activity, and three of them, viz., 7a-c have been found to be twice more active than aspirin. Cytotoxical evaluations of compounds 7a-e using neoplastic cells (NCI-H-292 and Hep-2) presented 41% of growth inhibition of neoplastic cells NCI-H-292. (c) 2006 Elsevier SAS. All rights reserved.
A New Facile, High Yielding and Efficient Protocol for the Synthesis of Novel 4-Phenylsulfonamido-6-Aryl-2-Phenylpyrimidine-5-Carbonitrile Derivatives
作者:Reza Aryan、Masoomeh Nojavan、Fatemeh Sadeghi
DOI:10.1080/10426507.2015.1050017
日期:2015.11.2
GRAPHICAL ABSTRACT Abstract A series of novel 4-phenylsulfonamido-6-aryl-2-phenylpyrimidine-5-carbonitrile derivatives have been synthesized through a two-step process. This protocol includes a facile surfactant-mediated methodology for the synthesis of 4-amino-6-aryl-2-phenylpyrimidine-5-carbonitrile derivatives through a one-pot, three-component reaction in the presence of a catalytic amount of
A Facile Synthesis of New Pyrazolo[3,4-<i>d</i>]pyrimidine Derivatives<i>via</i>a One-Pot Four-Component Reaction with Sodium Acetate Supported on Basic Alumina as Promoter
efficient one‐pot procedure for the synthesis of 3‐amino‐6‐aryl‐2‐phenylpyrazolo[3,4‐d]pyrimidine derivatives, through the reaction of aldehydes, malononitrile, benzamidine hydrochloride, and hydrazine hydrate in the presence of basic alumina‐supported sodium acetate (AcONa/Al2O3) under reflux conditions, is reported. This protocol has some advantages, including the use of a simple and one‐pot synthetic
在碱性条件下,通过醛,丙二腈,苯甲hydro盐酸盐和水合肼的反应,可以有效地合成3-氨基-6-芳基-2-苯基吡唑并[3,4- d ]嘧啶衍生物的一锅法据报道,在回流条件下氧化铝负载的乙酸钠(AcONa / Al 2 O 3)。该方案具有一些优点,包括使用简单的单锅合成方法直接从四种容易获得的起始原料中获得吡唑并[3,4- d ]嘧啶,简单的后处理,产品的高总收率以及同时进行NO 2转化为氨基,提供了合成更复杂结构的机会。
A novel and efficient synthesis of pyrazolo[3,4-d]pyrimidine derivatives and the study of their anti-bacterial activity
4-amino-6-aryl-2-phenyl pyrimidine-5-carbonitrile derivatives were synthesized through a one-pot, three-component reaction of an aldehyde, malononitrile and benzamidine hydrochloride, in the presence of magnetic nano Fe3O4 particles as a catalyst under solvent-free conditions. 3-Amino-6-aryl-2-phenylpyrazolo[3,4-d]pyrimidine derivatives were prepared through an efficient and environmentally friendly reaction between
在这项工作中,在磁性纳米Fe 3 O的存在下,通过醛,丙二腈和苯甲idine盐酸盐的一锅三组分反应,合成了4-氨基-6-芳基-2-苯基嘧啶-5-甲腈衍生物。在无溶剂条件下有4个颗粒作为催化剂。3-氨基-6-芳基-2-苯基吡唑并[3,4- d ]嘧啶衍生物是通过4-氨基-6-芳基-2-苯基嘧啶-5-甲腈衍生物与水合肼和已对其抗菌活性进行了评估。
One-step synthesis of aminopyrimidines from 5-Oxo-4<i>H</i>-benzopyrans
4-amino-6-aryl-2-phenylpyrimidine-5-carbonitriles have been prepared in one step procedure from the readily available 4-aryl-2-amino-3-cyano-5,6,7,8-tetrahydro-7,7-dimethyl-5-oxo-4H-benzopyrans. The mass spectroscopy study under EI conditions shows molecular peaks with high intensity corresponding to the loss of benzonitrile from the C2 position of the pyrimidine ring. Semiempirical (AMI and PM3) and ab initio
Synthesis of 4-amino-2,6-diaryl-5-cyanopyrimidines as antimicrobial agents
作者:Zenaide Severina do Monte、Maria Renata Leite Monteiro、Camila Beatriz Atanásio Borba、Norma Buarque de Gusmão、Emerson Peter da Silva Falcão、Ricardo Oliveira Silva、Rajendra M. Srivastava、Sebastião José de Melo
DOI:10.1080/00397911.2016.1151051
日期:2016.6.2
and arylamidines in the presence of a base was clarified. A preliminary screening of the antibacterial tests clearly showed that 4 out of 11 pyrimidines, 3a, 3e, 3f, and 3k, were effective against bacteria Staphyloccus aureus, Bacillus subtillis, and Pseudomonas aeruginosa. Further, the minimum inhibitory concentration (MIC) against the bacteria has been determined. GRAPHICAL ABSTRACT