<?xml version="1.0" encoding="UTF-8"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-10-18T23:56:47Z</responseDate><request verb="GetRecord" identifier="oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/13077" metadataPrefix="oai_dc">https://ebyu-rdlopen.rawdatalibrary.net/oai/request</request><GetRecord><record><header><identifier>oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/13077</identifier><datestamp>2026-10-18T21:13:27Z</datestamp><setSpec>openaire</setSpec><setSpec>driver</setSpec><setSpec>com_ebyu_10000</setSpec><setSpec>col_ebyu_10001</setSpec></header><metadata><oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><dc:title>Highly efficient chemical phosphorylation of 6-(4-phenylpiperazine-1-yl)-9-(β-D-ribofuranosyl)-9H-purine</dc:title><dc:creator>Polat, M. Fatih</dc:creator><dc:creator>Tuncbilek, Meral</dc:creator><dc:subject>microwave-assisted synthesis</dc:subject><dc:subject>Nucleoside-5’-O-phosphate analog</dc:subject><dc:subject>phosphorylation</dc:subject><dc:subject>Models, Molecular</dc:subject><dc:subject>Molecular Conformation</dc:subject><dc:subject>Purine Nucleosides</dc:subject><dc:subject>Stereoisomerism</dc:subject><dc:subject>6 (4 phenylpiperazine 1 yl) 9 (2',3' o isopropylidene 5' o (i tert butyl)phosphoryl beta dextro ribofuranosyl) 9h purine</dc:subject><dc:subject>6 (4 phenylpiperazine 1 yl) 9 (2,3,5 tri o acetyl beta dextro ribofuranosyl) 9h purine</dc:subject><dc:subject>6 (4 phenylpiperazine 1 yl) 9 (beta dextro ribofuranosyl) 9h purine</dc:subject><dc:subject>6 (4 phenylpiperazine 1 yl) 9 (beta dextro ribofuranosyl) 9h purine 5'o phosphate</dc:subject><dc:subject>6 (4 phenylpiperazine 1 yl] 9 (2',3'o isopropylidene beta dextro ribofuranosyl) 9h purine</dc:subject><dc:subject>6 chloro 9 (2,3,5 tri o acetyl beta dextro ribofuranosyl) 9h purine</dc:subject><dc:subject>purine derivative</dc:subject><dc:subject>unclassified drug</dc:subject><dc:subject>purine nucleoside</dc:subject><dc:subject>Article</dc:subject><dc:subject>controlled study</dc:subject><dc:subject>drug synthesis</dc:subject><dc:subject>microwave radiation</dc:subject><dc:subject>chemistry</dc:subject><dc:subject>conformation</dc:subject><dc:subject>molecular model</dc:subject><dc:description>Antimetabolites, which are metabolic antagonists used in the treatment of cancer and viral diseases by replacing metabolites, inhibit the action of metabolic enzymes and disrupt the pathways of synthesis of structural units necessary for the formation of nucleic acids. Purine antagonists, that are subunits of antimetabolites, reduce the production of purine bases, and hence, cause the nucleotide production to stop and bring about the death of cancer cells. Fludarabine (2-fluoro-ara-AMP), which is used in chemotherapy, is an antimetabolite of the purine class containing mono phosphate in its structure. In this study, a protocol was presented to effectively and efficiently synthesis of 6-(4-phenylpiperazine-1-yl)-9-(β-D-ribofuranosyl)-9H-purine-5’- O-phosphate compound in six steps and 25% overall yield starting with commercially available 6-chloropurine. © 2021 Taylor &amp; Francis Group, LLC.</dc:description><dc:publisher>Bellwether Publishing, Ltd.</dc:publisher><dc:date>2021</dc:date><dc:type>Article</dc:type><dc:identifier>https://rdlopen.rawdatalibrary.net/r/ebyu/13077</dc:identifier><dc:identifier>https://doi.org/10.1080/15257770.2020.1843679</dc:identifier><dc:identifier>1525-7770</dc:identifier><dc:language>en</dc:language><dc:relation>Nucleosides, Nucleotides and Nucleic Acids</dc:relation><dc:rights>info:eu-repo/semantics/openAccess</dc:rights><dc:type>info:eu-repo/semantics/article</dc:type><dc:identifier>https://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/13077</dc:identifier></oai_dc:dc></metadata></record></GetRecord></OAI-PMH>