New chemical synthesis of 5′-phosphoribosyl-N-formylglycineamide

1970 ◽  
Vol 48 (14) ◽  
pp. 2306-2309 ◽  
Author(s):  
Samuel Y. Chu ◽  
J. Frank Henderson
Keyword(s):  
Chemical Synthesis ◽  
Natural Product ◽  
Good Yield ◽  
De Novo ◽  
Hydroxyl Groups ◽  
Synthetic Route ◽  
Biological Studies

A new and convenient synthetic route to formylglycineamide ribonucleotide, an intermediate in the pathway of purine ribonucleotide biosynthesis de novo, is described. The method utilizes direct phosphorylation of the 5′-position of the linear riboside without protection of the 2′,3′-hydroxyl groups of the ribose, and gives a good yield of mixed α and β anomers. This route is suitable for synthesis of the natural product in quantities required for biological studies.

A New Protocol for Total Synthesis of Natural Product Frutinone A and Its Derivatives

2016 ◽  
Vol 69 (1) ◽  
pp. 98 ◽  
Author(s):  
Kang Lei ◽  
Dong-Wei Sun ◽  
Yuan-Yuan Tao ◽  
Xiao-Hua Xu
Keyword(s):  
Total Synthesis ◽  
Natural Product ◽  
Good Yield ◽  
Substitution Reaction ◽  
High Tolerance ◽  
Synthetic Route ◽  
Reaction Conditions ◽  
One Pot ◽  
Metal Free ◽  
Intramolecular Nucleophilic Substitution

A new protocol for total synthesis of natural product frutinone A was accomplished in three steps by using inexpensive 2′-hydroxyacetophenone as starting material. The key intermediate 3-(2-chlorobenzoyl)-4-hydroxycoumarin was synthesized in one pot through Baker–Venkataraman rearrangement of 2-acetylphenyl 2-chlorobenzoate followed by introduction of methyl chloroformate under basic conditions. Then, base-promoted intramolecular nucleophilic substitution reaction of 3-(2-chlorobenzoyl)-4-hydroxycoumarin provided frutinone A in excellent yield. The synthetic route features good yield, transition metal-free and mild reaction conditions, and high tolerance for functionality, thereby allowing easy substitutions around the frutinone A core.

scholarly journals Utilization and simulation of innovative new binuclear Co(ii), Ni(ii), Cu(ii), and Zn(ii) diimine Schiff base complexes in sterilization and coronavirus resistance (Covid-19)

2021 ◽  
Vol 19 (1) ◽  
pp. 772-784
Author(s):  
Moamen S. Refat ◽  
Ahmed Gaber ◽  
Walaa F. Alsanie ◽  
Mohamed I. Kobeasy ◽  
Rozan Zakaria ◽  
...  
Keyword(s):  
Schiff Base ◽  
Molecular Docking ◽  
Metal Ions ◽  
Free Ligand ◽  
Schiff Base Complexes ◽  
Hydroxyl Groups ◽  
Binuclear Complexes ◽  
Central Metal ◽  
H Nmr ◽  
Biological Studies

Abstract This article aimed at the synthesis and molecular docking assessment of new diimine Schiff base ligand, namely 2-((E)-(2-((Z)-2-(4-chlorophenyl)-2-hydroxyvinyl)hydrazono) methyl)-6-methoxyphenol (methoxy-diim), via the condensation of 1-(4-chloro-phenyl)-2-hydrazino-ethenol compound with 2-((E)-(2-((Z)-2-(4-chlorophenyl)-2-hydroxy vinyl) hydrazono)methyl)-6-methoxyphenol in acetic acid as well as the preparation of new binuclear complexes of Co(ii), Ni(ii), Cu(ii), and Zn(ii). The following synthesized complexes were prepared in a ratio of 2:1 (metal/ligand). The 1H-NMR, UV-Vis, and FTIR spectroscopic data; molar conductivity measurements; and microanalytical, XRD, TGA/DTG, and biological studies were carried out to determine the molecular structure of these complexes. According to the spectroscopic analysis, the two central metal ions were coordinated with the diamine ligand via the nitrogen of the hydrazine and oxygen of the hydroxyl groups for the first metal ions and via the nitrogen of the hydrazine and oxygen of the phenol group for the second metal ions. Molecular docking for the free ligand was carried out against the breast cancer 3hb5-oxidoreductase and the 4o1v-protein binding kidney cancer and COVID-19 protease, and good results were obtained.

scholarly journals Structural catalog of core Atg proteins opens new era of autophagy research

2021 ◽  
Author(s):  
Kazuaki Matoba ◽  
Nobuo N Noda
Keyword(s):  
De Novo ◽  
Structural Information ◽  
Membrane Dynamics ◽  
Autophagosome Formation ◽  
New Era ◽  
Intracellular Degradation ◽  
Atg Proteins ◽  
Biological Studies ◽  
Evolutionarily Conserved ◽  
Biological Methods

Summary Autophagy, which is an evolutionarily conserved intracellular degradation system, involves de novo generation of autophagosomes that sequester and deliver diverse cytoplasmic materials to the lysosome for degradation. Autophagosome formation is mediated by approximately 20 core autophagy-related (Atg) proteins, which collaborate to mediate complicated membrane dynamics during autophagy. To elucidate the molecular functions of these Atg proteins in autophagosome formation, many researchers have tried to determine the structures of Atg proteins by using various structural biological methods. Although not sufficient, the basic structural catalog of all core Atg proteins was established. In this review article, we summarize structural biological studies of core Atg proteins, with an emphasis on recently unveiled structures, and describe the mechanistic breakthroughs in autophagy research that have derived from new structural information.

scholarly journals De Novo Drug Design Using Artificial Intelligence Applied on SARS-CoV-2 Viral Proteins ASYNT-GAN

BioChem ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 36-48
Author(s):  
Ivan Jacobs ◽  
Manolis Maragoudakis
Keyword(s):  
Deep Learning ◽  
Small Molecules ◽  
Natural Product ◽  
De Novo ◽  
Viral Proteins ◽  
Computer Assisted ◽  
De Novo Drug Design ◽  
Learning Techniques ◽  
Latent Space ◽  
Synthetic Molecule

Computer-assisted de novo design of natural product mimetics offers a viable strategy to reduce synthetic efforts and obtain natural-product-inspired bioactive small molecules, but suffers from several limitations. Deep learning techniques can help address these shortcomings. We propose the generation of synthetic molecule structures that optimizes the binding affinity to a target. To achieve this, we leverage important advancements in deep learning. Our approach generalizes to systems beyond the source system and achieves the generation of complete structures that optimize the binding to a target unseen during training. Translating the input sub-systems into the latent space permits the ability to search for similar structures, and the sampling from the latent space for generation.

Exploring the Boundaries of “Practical”: De Novo Syntheses of Complex Natural Product-Based Drug Candidates

2017 ◽  
Vol 117 (18) ◽  
pp. 11994-12051 ◽  
Author(s):  
Tyler K. Allred ◽  
Francesco Manoni ◽  
Patrick G. Harran
Keyword(s):  
Natural Product ◽  
De Novo ◽  
Drug Candidates

scholarly journals De novo synthesis, structural assignment and biological evaluation of pseudopaline, a metallophore produced by Pseudomonas aeruginosa

2019 ◽  
Vol 10 (27) ◽  
pp. 6635-6641 ◽  
Author(s):  
Jian Zhang ◽  
Tianhu Zhao ◽  
Rongwen Yang ◽  
Ittipon Siridechakorn ◽  
Sanshan Wang ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Total Synthesis ◽  
Natural Product ◽  
Absolute Configuration ◽  
De Novo ◽  
Biological Evaluation ◽  
De Novo Synthesis ◽  
Structural Assignment ◽  
The Absolute

The first total synthesis and isolation of pseudopaline was reported, which allows determination and confirmation of the absolute configuration of the natural product.

scholarly journals Enriching Genomic Resources and Marker Development from Transcript Sequences ofJatropha curcasfor Microgravity Studies

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Wenlan Tian ◽  
Dev Paudel ◽  
Wagner Vendrame ◽  
Jianping Wang
Keyword(s):  
De Novo ◽  
Average Length ◽  
Snp Markers ◽  
Biodiesel Production ◽  
Kegg Database ◽  
Genomic Databases ◽  
Important Species ◽  
Biological Studies ◽  
Ssr And Snp Markers ◽  
De Novo Assembling

Jatropha (Jatropha curcasL.) is an economically important species with a great potential for biodiesel production. To enrich the jatropha genomic databases and resources for microgravity studies, we sequenced and annotated the transcriptome of jatropha and developed SSR and SNP markers from the transcriptome sequences. In total 1,714,433 raw reads with an average length of 441.2 nucleotides were generated. De novo assembling and clustering resulted in 115,611 uniquely assembled sequences (UASs) including 21,418 full-length cDNAs and 23,264 new jatropha transcript sequences. The whole set of UASs were fully annotated, out of which 59,903 (51.81%) were assigned with gene ontology (GO) term, 12,584 (10.88%) had orthologs in Eukaryotic Orthologous Groups (KOG), and 8,822 (7.63%) were mapped to 317 pathways in six different categories in Kyoto Encyclopedia of Genes and Genome (KEGG) database, and it contained 3,588 putative transcription factors. From the UASs, 9,798 SSRs were discovered with AG/CT as the most frequent (45.8%) SSR motif type. Further 38,693 SNPs were detected and 7,584 remained after filtering. This UAS set has enriched the current jatropha genomic databases and provided a large number of genetic markers, which can facilitate jatropha genetic improvement and many other genetic and biological studies.

Chemical Synthesis and Biological Studies on Mutated Gene-control Regions

1983 ◽  
Vol 47 (0) ◽  
pp. 411-418 ◽  
Author(s):  
M.H. Caruthers ◽  
S.L. Beaucage ◽  
J.W. Efcavitch ◽  
E.F. Fisher ◽  
R.A. Goldman ◽  
...  
Keyword(s):  
Chemical Synthesis ◽  
Gene Control ◽  
Biological Studies ◽  
Control Regions

Preptin Analogues: Chemical Synthesis, Secondary Structure and Biological Studies

2013 ◽  
Vol 82 (4) ◽  
pp. 429-437 ◽  
Author(s):  
Christina M. Buchanan ◽  
Zhenzhen Peng ◽  
Aiko Cefre ◽  
Vijayalekshmi Sarojini
Keyword(s):  
Secondary Structure ◽  
Chemical Synthesis ◽  
Biological Studies
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