A Chemoenzymatic Route To Prepare Acyclic Nucleoside Analogues
作者:Martín A. Palazzolo、Mariano J. Nigro、Adolfo M. Iribarren、Elizabeth Sandra Lewkowicz
DOI:10.1002/ejoc.201501412
日期:2016.2
Fil: Palazzolo, Martin Alejandro. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigacion en Ingenieria Genetica y Biologia Molecular "Dr. Hector N. Torres". Grupo Vinculado al INGEBI- Laboratorio de Biocatalisis y Biotransformaciones - LBB - UNQUI; Argentina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - San Luis
菲尔:帕拉佐洛,马丁·亚历杭德罗。Consejo Nacional de Investigaciones Cientificas y Tecnicas。Instituto de Investigacion en Ingenieria Genetica y Biologia Molecular “Dr. Hector N. Torres”。Grupo Vinculado al INGEBI-Laboratorio de Biocatalisis y Biotransformaciones - LBB - UNQUI; 阿根廷。Consejo Nacional de Investigaciones Cientificas y Tecnicas。Centro Cientifico Tecnologico Conicet - 圣路易斯。Instituto de Investigaciones en
N-Acetylneuraminic acid aldolase-catalyzed synthesis of acyclic nucleoside analogues carrying a 4-hydroxy-2-oxoacid moiety
作者:Mariano J. Nigro、Martín A. Palazzolo、Diego Colasurdo、Adolfo M. Iribarren、Elizabeth S. Lewkowicz
DOI:10.1016/j.catcom.2018.12.013
日期:2019.3
N-Acetylneuraminic acid aldolase (NeuAcA) (EC 4.1.3.3) is a pyruvate-dependent class I aldolase that catalyzes the reversible aldol cleavage of N-acetylneuraminic acid to form N-acetyl-D-mannosamine and pyruvate. The synthetic activity of this enzyme has been applied to the preparation of many sialic acid analogues. In this report, we demonstrate the ability of NeuAcA from Clostridium perfringens to
AbstractModified synthesis and antitubercular activity of 4-substituted pyrrolo[2,3-c]quinolines are reported. Some of the compounds showed significant antitubercular activity, when compared to some of the existing antitubercular drugs. A compound with an imidazole moiety at position 4 shows the highest activity and least toxicity. Graphical abstract
摘要报道了4-取代的吡咯并[2,3- c ]喹啉的合成和抗结核活性。与某些现有的抗结核药物相比,某些化合物具有显着的抗结核活性。在4位具有咪唑部分的化合物显示出最高的活性和最低的毒性。 图形概要
Synthesis of Bifacial Peptide Nucleic Acids with Diketopiperazine Backbones
作者:Dennis Bong、Shekaraiah Devari、Debmalya Bhunia
DOI:10.1055/a-1802-6873
日期:2022.6
We report a synthesis of bifacial peptidenucleicacids (bPNAs) with novel diketopiperazine (DKP) backbones that display unnatural melamine (M) bases, as well as native bases. To examine the structure–function scope of DKP bPNAs, we synthesized a set of bPNAs by using diaminopropionic acid, diaminobutyric acid, ornithine, and lysine derivatives to display the base-tripling motifs, which result in one
我们报告了双面肽核酸(bPNA)的合成,其具有新型二酮哌嗪(DKP)主链,显示非天然三聚氰胺(M)碱基以及天然碱基。为了检查 DKP bPNA 的结构-功能范围,我们通过使用二氨基丙酸、二氨基丁酸、鸟氨酸和赖氨酸衍生物合成了一组 bPNA,以显示碱基三重基序,从而产生一个、两个、三个或四个碳将α碳连接至侧链胺。 DNA 与这些 bPNA 杂交体的热变性表明,最佳侧链连接是四个碳,对应于赖氨酸衍生物。因此,通过Fmoc-赖氨酸的ε-胺与腺嘌呤、胞苷、尿苷和三聚氰胺的乙醛衍生物的双还原烷基化来制备每个侧链显示两个碱基的单体。有了这些构建模块,DKP bPNA 就可以展示天然和合成(三聚氰胺)碱基的组合。初步熔解研究表明,显示胞苷和三聚氰胺的 bPNA 与非规范结构的富含 T 的 DNA 具有结合特征,尽管这种行为的全面表征仍在进行中。所描述的方便且潜在可扩展的方法能够快速获得低分子量 (<1 kD)
Synthesis of Novel Mimetics of CMP-Sialic Acid as the Inhibitors of Sialyltransferases
Novel mimetics of CMP-sialic acid were designed as the inhibitors of sialyltransferases. They were synthesized in a short step from a cytosine carrying β-hydroxy-α-l-amino acid based on the knowledge that nikkomycin, a peptidic derivative of an uracil carrying amino acid, shows a potent inhibitory activity toward N-acetyl-d-glucosaminyltransferases that employ UDP-N-acetyl-d-glucosamine as the donor substrate. The cytosine carrying β-hydroxyl-α-l-amino acid, a key intermediate in our synthetic strategy, was easily prepared by the l-threonine aldolase (LTA) catalyzed reaction.