Specific inhibitors in vitamin biosynthesis. Part 9. Reactions of 7,7-dialkyl-7,8-dihydropteridines of use in the synthesis of potential inhibitors of tetrahydrofolate biosynthesis
作者:Saiba S. Al-Hassan、Robert Cameron、Sydney H. Nicholson、David H. Robinson、Colin J. Suckling、Hamish C. S. Wood
DOI:10.1039/p19850002145
日期:——
protium for deuterium under acidic and basic conditions: however, they failed to undergo clean bromination or aldol condensation. Autoxidation of alkyl groups at this position provided ready access to pteridines substituted with carbonyl groups at C-6. 6-Formyl derivatives underwent Wittig-type reactions to yield 6-aralkylidene compounds that are potential inhibitors of dihydrofolate reductase. Alkylation
Antagonists of the Human A<sub>2A</sub> Adenosine Receptor. 4. Design, Synthesis, and Preclinical Evaluation of 7-Aryltriazolo[4,5-<i>d</i>]pyrimidines
作者:Roger J. Gillespie、Samantha J. Bamford、Ruth Botting、Mike Comer、Sarah Denny、Suneel Gaur、Michael Griffin、Allan M. Jordan、Anthony R. Knight、Joanne Lerpiniere、Stefania Leonardi、Sean Lightowler、Steven McAteer、Angela Merrett、Anil Misra、Antony Padfield、Mark Reece、Mona Saadi、Daniel L. Selwood、Gemma C. Stratton、Dominic Surry、Richard Todd、Xin Tong、Vicki Ruston、Rebecca Upton、Scott M. Weiss
DOI:10.1021/jm800961g
日期:2009.1.8
therapeutic intervention in the alleviation of the symptoms associated with Parkinson’sdisease. This is thought to occur, at least in part, by increasing the sensitivity of the dopaminergic neurons to the residual, depleted levels of striatal dopamine. We herein describe a novel series of functionalized triazolo[4,5-d]pyrimidine derivatives that display functional antagonism of the A2A receptor. Optimization
人类A 2A受体的拮抗作用被认为是减轻与帕金森氏病有关的症状的治疗干预点。认为这至少部分地通过增加多巴胺能神经元对残留的,耗尽的纹状体多巴胺水平的敏感性而发生。我们在此描述了一系列新颖的功能化的三唑并[4,5- d ]嘧啶衍生物,其显示出对A 2A受体的功能拮抗作用。这些化合物的优化已导致关键衍生物的效能,选择性和药代动力学特性得到改善。这些努力导致发现了60(V2006 / BIIB014),其在帕金森氏病的常用模型中证明了强烈的口服活性。此外,该衍生物已显示出优异的临床前药代动力学,并已成功完成I期临床研究。目前,该化合物正在与Biogen Idec合作进行进一步的临床评估。
8-Substituted O6-Benzylguanine, Substituted 6(4)-(Benzyloxy)pyrimidine, and Related Derivatives as Inactivators of Human O6-Alkylguanine-DNA Alkyltransferase
作者:Mi-Young Chae、Kristin Swenn、Sreenivas Kanugula、M. Eileen Dolan、Anthony E. Pegg、Robert C. Moschel
DOI:10.1021/jm00002a018
日期:1995.1
Several 8-substituted O6-benzylguanines, 2- and/or 8-substituted 6-(benzyloxy)purines, substituted 6(4)-(benzyloxy)pyrimidines, and a 6-(benzyloxy)-s-triazine were tested for their ability to inactivate the human DNA repair protein, O6-alkylguanine-DNA alkyltransferase (AGT, alkyltransferase). Two types of compounds were identified as being significantly more effective than O6-benzylguanine (the prototype
A method of preparing 6-chloro-5-nitro-2,4-diaminopyrimidine includes: reacting guanidine hydrochloride with ethyl carbamoylacetate and sodium hypochlorite in the presence of a metal nitrate salt and acetate anhydride in an organic solvent.
Folate analogs altered in the C9-N10 bridge region. 18. Synthesis and antitumor evaluation of 11-oxahomoaminopterin and related compounds
作者:M. G. Nair、Timothy W. Bridges、Timothy J. Henkel、Roy L. Kisliuk、Y. Gaumont、F. M. Sirotnak
DOI:10.1021/jm00141a010
日期:1981.9
The chemical synthesis of 11-oxahomoaminopterin (1) has been carried out using procedures which were also found to be applicable to the synthesis of 11-oxahomofolic acid (2). Reaction of 1-bromo-4-[p-(caarbomethoxy)phenoxy]-2-butanone (10) with sodium azide gave 1-azido-4-[p-(carbomethoxy)phenoxy]-2-butanone (11). Protection of the carbonyl group of 11 as the ethylene ketal and subsequent base hydrolysis