112088-76-3Relevant academic research and scientific papers
Chemical synthesis and enzymatic properties of RNase A analogues designed to enhance second-step catalytic activity
Boerema, David J.,Tereshko, Valentina A.,Zhang, Junliang,Kent, Stephen B. H.
, p. 8804 - 8814 (2016)
In this paper, we have used total chemical synthesis of RNase A analogues in order to probe the molecular basis of enzyme catalysis. Our goal was to obligately fill the adenine-binding pocket on the enzyme molecule, and to thus pre-orient the imidazole side chain of His119 in its catalytically productive orientation. Two designed analogues of the RNase A protein molecule that contained an adenine moiety covalently bound to distinct amino acid side chains adjacent to the adenine binding pocket were prepared. A crystal structure of one analogue was determined at 2.3 ? resolution. Kinetic data for RNA transphosporylation and 2′,3′ cyclic mononucleotide hydrolysis were acquired for the adenine-containing RNase A analogue proteins. As anticipated, the presence of a covalently attached adenine on the enzyme molecule decreased the rate of transphosphorylation and increased the rate of hydrolysis, although the magnitude of the effects was small. This work illustrates the use of total protein synthesis to investigate the chemistry of enzyme catalysis in ways not possible through traditional biochemistry or molecular biology.
Efforts in redesigning the antileukemic drug 6-thiopurine: decreasing toxic side effects while maintaining efficacy
Torres, Arnaldo X.,Weeramange, Chamitha J.,Desman, Prathibha,Fatino, Anthony,Haney, Olivia,Rafferty, Ryan J.
, p. 169 - 179 (2019/01/30)
6-Thiopurine (6TP) is a currently prescribed drug in the treatment of diseases ranging from Crohn's disease to acute lymphocytic leukemia. While its potent mode of action is through incorporation into DNA as a thiol mimic of deoxyguanosine, severe toxicit
C-H amination of purine derivatives via radical oxidative coupling
Luo, Zheng,Jiang, Ziyang,Jiang, Wei,Lin, Dongen
, p. 3710 - 3718 (2018/04/14)
An oxidative coupling reaction between purines and alkyl ethers/benzyl compounds was developed to synthesize a series of N9 alkylated purine derivatives using n-Bu4NI as a catalyst and t-BuOOH as an oxidant. This protocol uses commercially available, inexpensive catalysts and oxidants and has a wide range of substrates with a simple operation.
Discovery of 9H-purins as potential tubulin polymerization inhibitors: Synthesis, biological evaluation and structure?activity relationships
Zhou, Zhong-Zhen,Shi, Xiu-Dong,Feng, Hong-Fang,Cheng, Yu-Fang,Wang, Hai-Tao,Xu, Jiang-Ping
, p. 1126 - 1134 (2017/08/02)
Two series of N-(4-methoxyphenyl)-N-methyl-9H-purin-6-amines (9a-d and 10a-h) and 9-substituted benzyl-6-chloro-9H-purines (11a-h) were designed and synthesized. Their antiproliferative activities against human myelogenous leukemia (K562), human neuroblas
SUBSTITUTED ETHYNYL HETEROBICYCLIC COMPOUNDS AS TYROSINE KINASE INHIBITORS
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Paragraph 00162; 00163, (2015/12/11)
The present disclosure provides a compound of formula (I) and the use thereof for the therapeutic treatment of human cancers including B-cell lymphoma and autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematosus, and multiple sclerosis.
Synthesis and anticonvulsant activity of novel purine derivatives
Wang, Shi-Ben,Jin, Peng,Li, Fu-Nan,Quan, Zhe-Shan
, p. 574 - 583 (2015/03/14)
A series of new purines containing triazole and other heterocycle substituents was synthesized and evaluated for their preliminary anticonvulsant activity and neurotoxicity by using the maximal electroshock (MES), subcutaneous pentylenetetrazole (scPTZ) and rotarod neurotoxicity (TOX) tests. Among the compounds studied, 9-decyl-6-(1H-1,2,4-triazol-1-yl)-9H-purine (5e) was the most potent compound, with a median effective dose of 23.4 mg/kg and a high protective index of more than 25.6 after intraperitoneal administration in mice. Compound 5e showed significant oral activity against MESinduced seizures in mice, with an ED50 of 39.4 mg/kg and a PI above 31.6. These results demonstrate that compound 5e possesses better anticonvulsant activity and is safer than the commercially available drugs carbamazepine and valproate in MES, scPTZ and TOX models.
Purine compounds
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Page/Page column 3, (2010/11/28)
The invention provides an antimycobacterial 6-aryl-9-(m- or p-substituted-benzyl) purine and purine analog compounds.
Synthesis, biological activity, and SAR of antimycobacterial 9-aryl-, 9-arylsulfonyl-, and 9-benzyl-6-(2-furyl)purines
Bakkestuen, Anne Kristin,Gundersen, Lise-Lotte,Utenova, Bibigul T.
, p. 2710 - 2723 (2007/10/03)
9-Aryl-, 9-arylsulfonyl- and 9-benzyl-6-(2-furyl)purines were synthesized by N-alkylation or N-arylation of the purine followed by Stille coupling to introduce the furyl substituent in the 6-position and the compounds screened for activity against Mycobac
6-(Alkylamino)-9-benzyl-9H-purines. A New Class of Anticonvulsant Agents
Kelley, James L.,Krochmal, Mark P.,Linn, James A.,McLean, Ed W.,Soroko, Francis E.
, p. 606 - 612 (2007/10/02)
Several 9-alkyl-6-substituted-purines were synthesized and tested for anticonvulsant activity against maximal electroshock-induced seizures (MES) in rats.Most compounds were prepared in three steps from 5-amino-4,6-dichloropyrimidine or in two steps via alkylation of 6-chloropurine.Potent anticonvulsant activity against MES resided in compounds that contain a benzyl substituent at the 9-position of 6-(methylamino)- or 6-(dimethylamino)purine.Among commonly used agents for control of seizures, this type of structure represents a new class of potent anticonvulsant agents.
