Synthesis of monosulfated saccharides in the spacered form
摘要:
The sulfated (Su) saccharides 3-Su-Galbeta, 3-Su-GaINAcbeta, 4-Su-GalNAcbeta, 6-Su-GalNAcalpha, 6-Su-GlcNAcbeta, 6-Su-LacNAcbeta, 6'-Su-LacNAcbeta, 3'-Su-Galbeta1-3GlcNAcbeta and 3'-Su-Galbeta1-3GalNAcalpha, all monosaccharides in D-configuration, have been synthesised in the form of 3-aminopropyl or 3-trifluoroacetamidopropyl glycosides.
Detoxication of Sulfur Half-Mustards by Nucleophilic Scavengers: Robust Activity of Thiopurines
作者:Jinyun Liu、K. Leslie Powell、Howard D. Thames、Michael C. MacLeod
DOI:10.1021/tx900190j
日期:2010.3.15
Sulfur mustard and monofunctional analogues (half-mustards, 2-[chloroethyl] alkyl sulfides) react as electrophiles, damaging cellular macromolecules, and thus are potentially subject to scavenging by nucleophilic agents. We have determined rate constants for the reaction of four purine derivatives that contain nucleophilic thiol moieties with several sulfur-half-mustards. Three of these compounds, 2,6-dithiopurine
自第一次世界大战以来,硫芥(双(2-氯乙基)硫化物)一直用于化学战,是众所周知的剧毒起泡剂。在长期低水平暴露后,它被认为是一种致癌物质,并且已知会在 DNA 中形成链间交联。由于易于合成,硫和氮芥作为恐怖分子的潜在化学威胁剂目前受到关注。硫芥和单功能类似物(半芥末,2-[氯乙基] 烷基硫化物)作为亲电试剂反应,破坏细胞大分子,因此可能会被亲核试剂清除。我们已经确定了四种含有亲核硫醇部分的嘌呤衍生物与几种半硫芥的反应速率常数。这些化合物中的三种,2,6-二硫嘌呤、2,6-二硫脲酸、和 9-methyl-6-mercaptopurine,与亲电子芥子化合物表现出容易的反应。在接近中性的 pH 值下,这些硫嘌呤是芥末亲电试剂的亲核清除剂,比其他低分子量硫醇(如N-乙酰半胱氨酸和谷胱甘肽。通过数值积分技术计算的进展曲线表明,等摩尔浓度的硫嘌呤显着减少了对表锍离子的总体暴露,这是硫芥子气溶解在水溶液中时产生的主要反应性亲电子试剂。
2'3' CYCLIC DINUCLEOTIDES WITH PHOSPHONATE BOND ACTIVATING THE STING ADAPTOR PROTEIN
申请人:INSTITUTE OF ORGANIC CHEMISTRY AND BIOCHEMISTRY ASCR,V.V.I.
公开号:US20190185510A1
公开(公告)日:2019-06-20
The present disclosure relates to 2′3′ cyclic phosphonate dinucleotides of general formula (J), their pharmaceutically acceptable salts, their pharmaceutical composition and combinations of said substances and other medicaments or pharmaceuticals. The disclosure also relates to the use of said compounds for the treatment or prevention of diseases or conditions modifiable by STING protein modulation, such as cancer or viral, allergic and inflammatory diseases. In addition, these substances can be used as adjuvants in vaccines.
申请人:Institute of Organic Chemistry and
Biochemistry ASCR, V.V.I.
公开号:EP3936514A1
公开(公告)日:2022-01-12
The present disclosure relates to 3'3' cyclic phosphonate dinucleotides of general formula (J), their pharmaceutically acceptable salts, their pharmaceutical composition and combinations of said substances and other medicaments or pharmaceuticals. The disclosure also relates to the use of said compounds for the treatment or prevention of diseases or conditions modifiable by STING protein modulation, such as cancer or viral, allergic and inflammatory diseases. In addition, these substances can be used as adjuvants in vaccines.
Synthesis and pH-dependent stability of purine-6-sulfenic acid, a putative reactive metabolite of 6-thiopurine
作者:R. T. Abraham、L. M. Benson、I. Jardine
DOI:10.1021/jm00364a031
日期:1983.10
hepatic cytochrome P-450 to an intermediate capable of binding to proteins by a mixed disulfide linkage. The identity of the active metabolite was postulated to be purine-6-sulfenic acid. In the present report, we describe the synthesis of the sulfenic acidderivatives of 6-thiopurine and two structurally similar compounds, 9-methyl-6-thiopurine and 4-mercapto-1H-pyrazolo[3,4-d]-pyrimidine. The unusual