6-硫嘌呤(6TP)是目前开的处方药,用于治疗从克罗恩氏病到急性淋巴细胞性白血病的各种疾病。尽管其有效的作用方式是通过作为脱氧鸟苷的硫醇模拟物掺入DNA,但其给药具有严重的毒性,这阻碍了潜在的治疗应用。我们以前曾在体外报道,6TP的氧化代谢产物,特别是6-硫尿酸(6TU,K i 7μM )是UDP-葡萄糖脱氢酶(UDPGDH)的有效抑制剂,UDPGDH是负责UDP-形成的酶。葡萄糖醛酸(UDPGA),是肝脏排毒过程中必不可少的底物。一个在体内进行了调查以探究6TU是否抑制了大鼠肝细胞中的UDPGDH,并且观察到6TU确实确实抑制了胆红素与UDPGA的结合。胆红素排泄失败与6TP给药相关的大多数已报道的毒性有关。努力构建在C8位取代的6TP类似物,以减少对UDPGDH的抑制,同时保持治疗功效。通过五个合成步骤,已经获得了三个新的6TP类似物,它们在C8位置带有卤素(Br,Cl和F),总产率为
6-硫嘌呤(6TP)是目前开的处方药,用于治疗从克罗恩氏病到急性淋巴细胞性白血病的各种疾病。尽管其有效的作用方式是通过作为脱氧鸟苷的硫醇模拟物掺入DNA,但其给药具有严重的毒性,这阻碍了潜在的治疗应用。我们以前曾在体外报道,6TP的氧化代谢产物,特别是6-硫尿酸(6TU,K i 7μM )是UDP-葡萄糖脱氢酶(UDPGDH)的有效抑制剂,UDPGDH是负责UDP-形成的酶。葡萄糖醛酸(UDPGA),是肝脏排毒过程中必不可少的底物。一个在体内进行了调查以探究6TU是否抑制了大鼠肝细胞中的UDPGDH,并且观察到6TU确实确实抑制了胆红素与UDPGA的结合。胆红素排泄失败与6TP给药相关的大多数已报道的毒性有关。努力构建在C8位取代的6TP类似物,以减少对UDPGDH的抑制,同时保持治疗功效。通过五个合成步骤,已经获得了三个新的6TP类似物,它们在C8位置带有卤素(Br,Cl和F),总产率为
[EN] SUBSTITUTED ETHYNYL HETEROBICYCLIC COMPOUNDS AS TYROSINE KINASE INHIBITORS<br/>[FR] COMPOSÉS ÉTHYNYLE HÉTÉROBICYCLIQUES SUBSTITUÉS EN TANT QU'INHIBITEURS DE LA TYROSINE KINASE
申请人:ETERNITY BIOSCIENCE INC
公开号:WO2015178955A1
公开(公告)日:2015-11-26
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.
Substituted ethynyl heterobicyclic compounds as tyrosine kinase inhibitors
申请人:ETERNITY BIOSCIENCE INC.
公开号:US10144737B2
公开(公告)日:2018-12-04
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.
本公开提供了一种式(I)化合物及其在人类癌症(包括 B 细胞淋巴瘤)和自身免疫性疾病(如类风湿性关节炎、系统性红斑狼疮和多发性硬化症)治疗中的用途。
Synthesis of 8-Bromo-<i>N</i>-benzylpurines via 8-Lithiated Purines: Scope and Limitations
作者:Thywill Gamadeku、Lise-Lotte Gundersen
DOI:10.1080/00397910903318708
日期:2010.8.16
9-Benzylpurines have been lithiated in the 8-position and subsequently brominated when trapped with BrCCl2CCl2Br. The 8-bromopurines were isolated in excellent yields when the benzyl group carried an alkoxy or alkyl group in the ortho or para position. Without these substituents, the conversion was generally less, and formation of 8,8'-purinyl dimers was observed. There was also evidence of debenzylation in some instances. Bromination of 7-benzylpurines employing the same set of reaction conditions has also been achieved.
SUBSTITUTED ETHYNYL HETEROBICYCLIC COMPOUNDS AS TYROSINE KINASE INHIBITORS