Solution-phase synthesis of 2,6,9-trisubstituted purines
摘要:
A simple three-step method for the solution-phase combinatorial synthesis of 2,6,9-trisubstituted purines from 2,6-dichloropurine is described. The synthesis exploits the use of resin capture to remove excess reagent used in the final step. (C) 1998 Elsevier Science Ltd. All rights reserved.
A simple dehydrazination reaction has been achieved in the presence of a catalytic amount of CuSO4 for the first time. With CuSO4 (2 mol%) as a catalyst and water as a solvent, the dehydrazination products were obtained in good yields (66–95%). Moreover, the drugs nebularine and vidarabine were afforded successfully, and vidarabine could be produced on a 0.923 kg scale, which shows good potential for industrial applications.
Reduction of Different Electron-PoorN-Heteroarylhydrazines in Strong Basic Conditions
作者:Asier Unciti-Broceta、María J. Pineda de las Infantas、Miguel A. Gallo、Antonio Espinosa
DOI:10.1002/chem.200600282
日期:2007.2.12
this reductive process is a base-catalyzed reaction that takes only place in the presence of air, probably through an oxygen-assisted mechanism. As consequence of the specific features of this kind of hydrazone/enehydrazine tautomers, the overall outcome of the process is the synthesis of a Shapiro-type reduction product by simply using a milder version of the Huang-Minlon methodology.
Novel xanthine oxidase inhibitor studies. Part 2. Synthesis and xanthine oxidase inhibitory activities of 2-substituted 6-alkylidenehydrazino- or 6-arylmethylidenehydrazino-7H-purines and 3- and/or 5-substituted 9H-1,2,4-triazolo[3,4-i ]purines
general synthesis of 2-substituted 6-alkylidenehydrazino- or 6-arylmethylidenehydrazino-7H-purines and 3- and/or 5-substituted 9H-1,2,4-triazolo[3,4-i]purines, which were obtained by oxidative cyclisation of the corresponding 6-aldehyde hydrazones of 7H-purine, as a new class of potential xanthine oxidaseinhibitors are reported. Their inhibitory activities against bovine milk xanthine oxidase in vitro
2-取代的6-亚烷基萘并肼基或6-芳基亚甲基肼基并氨基7 H-嘌呤和3-和/或5-取代的9 H -1,2,4-三唑并[3,4- -i ]嘌呤的简便且通用的合成方法,据报道,它们是通过相应的7 H-嘌呤的6-醛的氧化环化而获得的,作为新型潜在的黄嘌呤氧化酶抑制剂。还研究了它们在体外对牛黄嘌呤氧化酶的抑制活性,一些嘌呤2和6和三唑并呋喃酮7的活性比别嘌呤醇高出几倍到几百倍。
Purine compounds and xanthine oxidase inhibitors
申请人:Yamasa Corporation
公开号:US05990118A1
公开(公告)日:1999-11-23
Purine or triazolopurine compounds are disclosed represented by formula (I) or (II): ##STR1## wherein R.sup.1 and R.sup.4 represent each hydrogen, halogeno, hydroxy, mercapto, or amino; R.sup.2 represents alkyl or aryl; and R.sup.3 and R.sup.5 represent each hydrogen, alkyl, or aryl; and pharmaceutical compositions comprising these compounds as xanthine oxidase inhibitors, remedies for hyperuricemia, or remedies or preventive agents for gout.
[EN] NOVEL BICYCLIC HETEROARYL COMPOUND AND USE THEREOF<br/>[FR] NOUVEAU COMPOSÉ HÉTÉROARYLE BICYCLIQUE ET SON UTILISATION<br/>[KO] 신규 바이사이클릭 헤테로아릴 화합물 및 이의 용도
申请人:ILDONG PHARMACEUTICAL CO LTD
公开号:WO2024014885A1
公开(公告)日:2024-01-18
본 발명은 하기 화학식 1로 표시되는 화합물, 이의 광학 이성질체, 또는 이의 약학적으로 허용가능한 염을 제공한다. 본 발명은 신규 화합물로써 PIKfyve 억제에 대한 우수한 활성을 가지고 있어 PIKfyve 활성 관련 암 질환, 염증성 질환 또는 리소좀 축적 질환에 대한 치료제로서 유용하다.