CAS: 209216-23-9; 2-Amino-9-((1S,3R,4S)-4-Hydroxy-3-(Hydroxymethyl)-2-Methylenecyclopentyl)-1,9-Dihydro-6H-Purin-6-One Hydrate

相似化合物

142217-69-4 142217-81-0 1367369-76-3

Entecavir,三氟乙酸 反应生成恩替卡韦一水合物
参考文献:Process For Preparing Entecavir And Its Intermediates
标题:Process For Preparing Entecavir And Its Intermediates
摘要:一种制备恩替卡韦的方法,包括将式(m5)的化合物转化为恩替卡韦,其中式(m5)上的两个pg(保护基)结合在一起形成一个可选取代的六元或七元环.

专利信息

专利号:WO-2022256490-A9
优先权日:2021-06-03
标题:Improved synthesis of phosphoramidates for the treatment of hepatitis b virus
发明人：LOCKWOOD MARK
权利人:ANTIOS THERAPEUTICS INC
摘要:The synthesis of phosphoramidate prodrugs useful in the treatment of viral infections is disclosed. Specifically, an improved synthesis of phosphoramidate nucleotides useful in the treatment of Hepatitis B virus is disclosed.

专利号:US-10995093-B2
优先权日:2016-04-07
标 题 :Synthesis of 2′-fluoro-6′-methylene-carbocyclic adenosine (FMCA) and 2′-fluoro-6′methylene-carbocyclic guanosine (FMCG)
发明人：CHU CHUNG K; MULAMOOTTTIL VARUGHESE ALEXANDER; MISHRA RAM C; SINGH UMA SHARAN
权利人:UNIV GEORGIA
摘要:The invention provides a new convergent approach for the synthesis of 2′-fluoro-6′-methylene-carbocyclic adenosine (FMCA) and 2′-fluoro-6′-methylene-carbocyclic guanosine (FMCG) from a readily available starting material in eight steps. An efficient and practical methodology for stereospecific preparation of a versatile carbocyclic key intermediate, (1S,3R, 4R)-3-tert-butoxy-4-(tert-butoxymethyl)-2-fluoro-5-methylenecyclopentanol (compound 8 of scheme 1A or a) in only six (6) steps is also provided. Prodrugs of these compounds are also prepared.

专利号:US-9334273-B1
优先权日:2014-03-05
标题:Efficient and stereoselective synthesis of 2′-fluoro-6′-methylene-carbocyclic adenosine (FMCA)
发明人：CHU DAVID C K; SINGH UMA S
权利人:UNIV GEORGIA
摘要:The invention provides a new convergent approach for the synthesis of 2′-fluoro-6′-methylene-carbocyclic adenosine (FMCA) from a readily available starting material (Vince lactam) in fourteen steps. An efficient and practical methodology for stereospecific preparation of a versatile carbocyclic key intermediate, D -2′-fluoro-6′-methylene cyclopentanol by diazotization, elimination, stereoselective epoxidation, fluorination and oxidative reduction of the Vince lactam in twelve steps is also provided.

专利号:US-2015376219-A1
优先权日:2014-06-30
标题 :Selective Preparations of Purine Nucleosides and Nucleotides: Reagents and Methods
发明人：ZHONG MINGHONG
权利人:ZHONG MINGHONG
摘要:A process of regiospecific synthesis of N-9 purine nucleoside analogs in either solution or solid phase synthesis is described. The introduction of the sugar moiety or its analogue on to a 6-heteroarylium purine or its mesomeric betaine so that formation of only the N-9 position regioisomers of the purine nucleoside analogs (either D or L enantiomers) is obtained. This regiospecific introduction of the sugar moiety allows the synthesis of purine nucleoside analogs in high yields without formation of the N-7-positional regioisomers, while the 6-heteroaryliums are leaving groups facilitated for nucleophilic displacement. Solid supported 6-heterarylium purine bases can be used for purine based library synthesis and synthesis of nucleotide monophosphates and polyphosphates. Processes for providing novel 6-heteroarylium purines and their corresponding mesomeric betaines for the regiospecific synthesis of N-9 purine nucleoside analogs and nucleotides are described.

专利号:EP-1543168-B1
优先权日:2002-09-27
标 题:Method for assaying replication of hbv and testing susceptibility to drugs
发明人：DURANTEL DAVID; DURANTEL SANDRA; TREPO CHRISTIAN; ZOULIM FABIEN
权利人:INST NAT SANTE RECH MED
摘要:Measuring the replication capacity of hepatitis B virus (HBV), e.g. HBV in a biological sample, possibly in the presence of a pharmaceutical product, and particularly an antiviral agent, is new. Measuring the replication capacity of hepatitis B virus (HBV), e.g. HBV present in a biological sample, possibly in the presence of a pharmaceutical product, particularly an antiviral agent, comprises: (a) optional extraction of nucleic acids contained in the sample; (b) PCR amplification of HBV nucleic acids using at least 2 primer pairs to obtain at least 2 amplified HBV genomic fragments representing more-than-full-length HBV genome; (c) cloning the fragments obtained into a vector; (d) transfecting or transducing susceptible cells with the vector; (e) culturing the transfected or transduced cells in conditions allowing synthesis of HBV pregenomic RNA (pgRNA) from the cloned HBV DNA; (f) optionally treating the cultured cells with a pharmaceutical product, particularly an antiviral agent; and (g) determining the replication capacity of the HBV, and the effect of any pharmaceutical product used on viral gene expression and/or viral replication. Independent claims are also included for: (1) a polynucleotide useful as primer for HBV amplification, comprising a sequence selected from 21 sequences of 23-42 bp (SEQ ID NO: 1-21) given in the specification; (2) a primer pair for HBV amplification comprising: (a) a forward primer comprising SEQ ID NO: 1-12, and/or a reverse primer comprising SEQ ID NO: 13 or SEQ ID NO: 14; (b) a forward primer comprising SEQ ID NO: 15 and/or 16 or 19, and a reverse primer comprising SEQ ID NO: 17 and/or SEQ ID NO: 18; (c) a forward primer comprising SEQ ID NO: 19, and a reverse primer comprising SEQ ID NO: 17 and/or SEQ ID NO: 18; or (d) a forward primer comprising SEQ ID NO: 20 or 22, and a reverse primer comprising SEQ ID NO: 21 or 23; (3) kits for HBV amplification, comprising a primer pair of (2); (4) a vector comprising a more-than-full length HBV genome as defined above, and a promoter modified in the 5' by the presence of a restriction site in the 5' of the +1 of transcription, where the +1 of transcription of the more-than-full length HBV genome and of the promoter are fused, and the promoter controls the synthesis of a pgRNA from the more-than-full length HBV genome post-cell-transfection; and (5) a baculovirus or cell line comprising the vector. ACTIVITY : Virucide. MECHANISM OF ACTION : None given.

专利号:US-2017198027-A1
优先权日:2012-01-31
标 题:Process of afod and afcc and manufacturing and purification processes of proteins
发明人：HOANG KIEU
权利人:HOANG KIEU
摘要:Manufacturing and purification processes of proteins, KH 1-through KH-52, and more KH proteins are being discovered in good healthy cells—named KH CELLS. KH CELLS are good healthy cells in which the RNA synthesizes good proteins that: 1) Send signal to the damaged, sick, and bad cells that triggers that synthesis of good proteins that transform these cells to become GOOD healthy cells; 2) Send signal to the other currently undamaged cells to synthesis of good proteins to protect them from being damaged, infected and prone to DNA and other cellular alterations; and 3) Send signal to the body to produce new cells that are healthy and forbid them from being affected by intra- and extracellular damaging signals. The mechanism that governs these processes is that the KH good healthy cells provide innate good signals that make good proteins to boost the immune system.