ES2179080T3 - Derivados de poliamida-oligonucleotido, su preparacion y utilizacion. - Google Patents
Derivados de poliamida-oligonucleotido, su preparacion y utilizacion.Info
- Publication number
- ES2179080T3 ES2179080T3 ES95103332T ES95103332T ES2179080T3 ES 2179080 T3 ES2179080 T3 ES 2179080T3 ES 95103332 T ES95103332 T ES 95103332T ES 95103332 T ES95103332 T ES 95103332T ES 2179080 T3 ES2179080 T3 ES 2179080T3
- Authority
- ES
- Spain
- Prior art keywords
- polyamide
- dna
- covalent
- preparation
- well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004952 Polyamide Substances 0.000 abstract 2
- 229920002647 polyamide Polymers 0.000 abstract 2
- 108091034117 Oligonucleotide Proteins 0.000 abstract 1
- 229940126601 medicinal product Drugs 0.000 abstract 1
- 108020004707 nucleic acids Proteins 0.000 abstract 1
- 150000007523 nucleic acids Chemical class 0.000 abstract 1
- 102000039446 nucleic acids Human genes 0.000 abstract 1
- 108090000623 proteins and genes Proteins 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H21/00—Compounds containing two or more mononucleotide units having separate phosphate or polyphosphate groups linked by saccharide radicals of nucleoside groups, e.g. nucleic acids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/56—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule
- A61K47/59—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyureas or polyurethanes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/56—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule
- A61K47/59—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyureas or polyurethanes
- A61K47/595—Polyamides, e.g. nylon
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/56—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule
- A61K47/59—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyureas or polyurethanes
- A61K47/60—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyureas or polyurethanes the organic macromolecular compound being a polyoxyalkylene oligomer, polymer or dendrimer, e.g. PEG, PPG, PEO or polyglycerol
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/001—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof by chemical synthesis
- C07K14/003—Peptide-nucleic acids (PNAs)
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Genetics & Genomics (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Epidemiology (AREA)
- Biotechnology (AREA)
- Gastroenterology & Hepatology (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Virology (AREA)
- Oncology (AREA)
- Cardiology (AREA)
- Communicable Diseases (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Saccharide Compounds (AREA)
- Polyamides (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Medicinal Preparation (AREA)
Abstract
SE DESCRIBE DERIVADO POLIAMIDA - OLIGONUCLEOTIDO DE LA FORMULA DONDE Q, R, S, T DE FORMA INDEPENDIENTE UNO DE OTRO SIGNIFICAN 0 O 1, LA SUMA DE DOS O MAS SIMBOLOS VECINOS Q, R, S Y T SON MAYORES O IGUAL A 2; X ES 1 HASTA 20, DNA ES UN ACIDO NUCLEICO COMO DNA O RNA O UN DERIVADO CONOCIDO DE LOS MISMOS; LI ES UNA LIGADURA COVALENTE ENTRE DNA Y PNA. LA LIGADURA COVALENTE CONTIENE UN ENLACE O UN RESTO ORGANICO CON AL MENOS UN ATOMO DE LA SERIE C, N, O O S; PNA SIGNIFICA UNA ESTRUCTURA POLIAMIDA, QUE CONTIENE AL MENOS UNA NUCLEOBASE, QUE ES DIFERENTE DE IMINA; Y F Y F'' SON GRUPOS TERMINALES Y/O ESTAN UNIDOS UNO CON OTRO A TRAVES DE UN ENLACE COVALENTE, ASI COMO SUS SALES TOLERABLES FISIOLOGICAMENTE, PROCESO PARA SU ELABORACION ASI COMO SU UTILIZACION COMO MEDICAMENTO, COMO SONDA DE GENES Y COMO PRIMER.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4408528A DE4408528A1 (de) | 1994-03-14 | 1994-03-14 | Peptid-Oligonucleotid-Derivate, deren Herstellung und Verwendung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2179080T3 true ES2179080T3 (es) | 2003-01-16 |
Family
ID=6512694
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES95103332T Expired - Lifetime ES2179080T3 (es) | 1994-03-14 | 1995-03-08 | Derivados de poliamida-oligonucleotido, su preparacion y utilizacion. |
| ES01104012T Expired - Lifetime ES2269239T3 (es) | 1994-03-14 | 1995-03-08 | Derivados de poliamida-oligonucleotidos, su preparacion y uso. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES01104012T Expired - Lifetime ES2269239T3 (es) | 1994-03-14 | 1995-03-08 | Derivados de poliamida-oligonucleotidos, su preparacion y uso. |
Country Status (13)
| Country | Link |
|---|---|
| EP (2) | EP1113021B1 (es) |
| JP (1) | JP4620810B2 (es) |
| KR (1) | KR100416864B1 (es) |
| CN (1) | CN100379756C (es) |
| AT (2) | ATE220070T1 (es) |
| AU (1) | AU698210B2 (es) |
| CA (1) | CA2144475C (es) |
| DE (3) | DE4408528A1 (es) |
| DK (2) | DK0672677T3 (es) |
| ES (2) | ES2179080T3 (es) |
| FI (2) | FI117135B (es) |
| NO (1) | NO314664B1 (es) |
| PT (2) | PT1113021E (es) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6710164B1 (en) | 1993-11-22 | 2004-03-23 | Peter E. Nielsen | Peptide nucleic acids having enhanced binding affinity, sequence specificity and solubility |
| DE4438918A1 (de) | 1994-11-04 | 1996-05-09 | Hoechst Ag | Modifizierte Oligonukleotide, deren Herstellung sowie deren Verwendung |
| US6150510A (en) | 1995-11-06 | 2000-11-21 | Aventis Pharma Deutschland Gmbh | Modified oligonucleotides, their preparation and their use |
| DE19502912A1 (de) * | 1995-01-31 | 1996-08-01 | Hoechst Ag | G-Cap Stabilisierte Oligonucleotide |
| ATE206131T1 (de) * | 1995-03-13 | 2001-10-15 | Aventis Pharma Gmbh | Phosphonomonoesternnukleinsäuren, verfahren zu ihrer herstellung und ihre verwendung |
| DE19532553A1 (de) * | 1995-09-04 | 1997-03-06 | Hoechst Ag | Verfahren zur Herstellung substituierter N-Ethyl-Glycinderivate |
| GB2324534B (en) * | 1996-01-06 | 2000-05-10 | Danbiosyst Uk | Composition for delivery of nucleic acid to a cell |
| EP0808898B1 (en) * | 1996-05-24 | 2004-05-19 | Aventis Pharma Deutschland GmbH | Reagent and method for inhibition of N-ras expression |
| NZ332780A (en) * | 1996-05-31 | 2000-07-28 | Allelix Neuroscience Inc | Substituted amines for the treatment of neurological and neuropsychiatric disorders |
| US6191165B1 (en) | 1996-05-31 | 2001-02-20 | Allelix Neuroscience Inc. | Pharmaceutical for treatment of neurological and neuropsychiatric disorders |
| JP3306073B2 (ja) * | 1996-07-24 | 2002-07-24 | ブヒャルト,ドルテ | 増加した結合親和性、配列特異性および溶解性を有するペプチド核酸 |
| DE19637339A1 (de) * | 1996-09-13 | 1998-03-19 | Hoechst Ag | Verfahren zur Amplifikation von Nukleinsäuren |
| AU9063398A (en) | 1997-09-12 | 1999-04-05 | Exiqon A/S | Oligonucleotide analogues |
| WO1999034014A2 (en) * | 1997-12-23 | 1999-07-08 | Roche Diagnostics Gmbh | A method for the determination of a nucleic acid |
| US5952202A (en) * | 1998-03-26 | 1999-09-14 | The Perkin Elmer Corporation | Methods using exogenous, internal controls and analogue blocks during nucleic acid amplification |
| DE19935303A1 (de) | 1999-07-28 | 2001-02-08 | Aventis Pharma Gmbh | Oligonukleotide zur Inhibierung der Expression von humanem eg5 |
| US6316230B1 (en) | 1999-08-13 | 2001-11-13 | Applera Corporation | Polymerase extension at 3′ terminus of PNA-DNA chimera |
| US7205105B2 (en) | 1999-12-08 | 2007-04-17 | Epoch Biosciences, Inc. | Real-time linear detection probes: sensitive 5′-minor groove binder-containing probes for PCR analysis |
| DE10019135A1 (de) * | 2000-04-18 | 2001-10-31 | Aventis Pharma Gmbh | Polyamidnukleinsäure-Derivate, Mittel und Verfahren zu ihrer Herstellung |
| US7348146B2 (en) | 2003-10-02 | 2008-03-25 | Epoch Biosciences, Inc. | Single nucleotide polymorphism analysis of highly polymorphic target sequences |
| JP4942484B2 (ja) | 2003-10-28 | 2012-05-30 | エポック・バイオサイエンシーズ・インコーポレイテッド | 改良された感度および低バックグラウンドを備えるハイブリダイゼーションによるdna検出のための蛍光プローブ |
| DE102006034319A1 (de) * | 2006-07-21 | 2008-01-31 | Ugichem Gmbh | Chirale mit Phosponsäurester- oder Phosphonsäure- substituierte Verbindungen |
| EP2781523A1 (en) | 2013-03-18 | 2014-09-24 | Miltenyi Biotec GmbH | Lipophilic oligonucleotide analogs |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3856406T2 (de) * | 1987-10-28 | 2000-10-19 | Howard Florey Institute Of Experimental Physiology And Medicine, Parkville | Oligonucleotid-polyamid konjugate |
| WO1993024511A1 (en) * | 1992-05-29 | 1993-12-09 | Howard Florey Institute Of Experimental Physiology And Medicine | Oligonucleotide-polyamide conjugates |
| US5138045A (en) * | 1990-07-27 | 1992-08-11 | Isis Pharmaceuticals | Polyamine conjugated oligonucleotides |
| DK51092D0 (da) * | 1991-05-24 | 1992-04-15 | Ole Buchardt | Oligonucleotid-analoge betegnet pna, monomere synthoner og fremgangsmaade til fremstilling deraf samt anvendelser deraf |
| US5646261A (en) * | 1992-01-22 | 1997-07-08 | Hoechst Aktiengesellschaft | 3'-derivatized oligonucleotide analogs with non-nucleotidic groupings, their preparation and use |
| FI115214B (fi) * | 1992-01-22 | 2005-03-31 | Hoechst Ag | Menetelmä oligonukleotidianalogien valmistamiseksi ja niiden käyttö |
-
1994
- 1994-03-14 DE DE4408528A patent/DE4408528A1/de not_active Withdrawn
-
1995
- 1995-03-08 EP EP01104012A patent/EP1113021B1/de not_active Expired - Lifetime
- 1995-03-08 DE DE59510252T patent/DE59510252D1/de not_active Expired - Lifetime
- 1995-03-08 ES ES95103332T patent/ES2179080T3/es not_active Expired - Lifetime
- 1995-03-08 DK DK95103332T patent/DK0672677T3/da active
- 1995-03-08 ES ES01104012T patent/ES2269239T3/es not_active Expired - Lifetime
- 1995-03-08 AT AT95103332T patent/ATE220070T1/de active
- 1995-03-08 DE DE59511061T patent/DE59511061D1/de not_active Expired - Lifetime
- 1995-03-08 PT PT01104012T patent/PT1113021E/pt unknown
- 1995-03-08 DK DK01104012T patent/DK1113021T3/da active
- 1995-03-08 PT PT95103332T patent/PT672677E/pt unknown
- 1995-03-08 EP EP95103332A patent/EP0672677B1/de not_active Expired - Lifetime
- 1995-03-08 AT AT01104012T patent/ATE335760T1/de active
- 1995-03-10 FI FI951132A patent/FI117135B/fi not_active IP Right Cessation
- 1995-03-10 AU AU14798/95A patent/AU698210B2/en not_active Ceased
- 1995-03-13 NO NO19950955A patent/NO314664B1/no not_active IP Right Cessation
- 1995-03-13 CA CA2144475A patent/CA2144475C/en not_active Expired - Fee Related
- 1995-03-13 CN CNB951029460A patent/CN100379756C/zh not_active Expired - Lifetime
- 1995-03-14 JP JP05464495A patent/JP4620810B2/ja not_active Expired - Fee Related
- 1995-03-14 KR KR1019950005676A patent/KR100416864B1/ko not_active Expired - Lifetime
-
2005
- 2005-10-24 FI FI20051072A patent/FI117939B/fi not_active IP Right Cessation
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2179080T3 (es) | Derivados de poliamida-oligonucleotido, su preparacion y utilizacion. | |
| PT693065E (pt) | Derivados de cumarina nao-nucleosidicos como agentes reticulantes de polionucleotidos | |
| DE69528362D1 (de) | Oligomere phosphoramidat- und phosphorthioamidatverbindungen | |
| Fomich et al. | Azide phosphoramidite in direct synthesis of azide-modified oligonucleotides | |
| ES2161290T3 (es) | Derivados de quinazolina. | |
| ES2118069T3 (es) | Profarmacos de fosfonatos. | |
| DK0759927T3 (da) | Pteridinnucleotidanaloger som fluorescerende DNA prober | |
| ATE154029T1 (de) | 7-deazapurin modifizierte oligonukleotide | |
| EP1117672A4 (en) | ANTI-SENSE MODULATION OF SURVIVIN EXPRESSION | |
| ES2124062T3 (es) | Derivados de nucleosido fosforotioato, sintesis y uso de los mismos. | |
| ES2136037B1 (es) | Inhibidores de sulfamida-metaloproteasa | |
| ATE244259T1 (de) | Verwendungen von fluoreszierenden n-nukleosiden und dessen analogen | |
| ATE360706T1 (de) | Peptidakzeptor ligationsverfahren | |
| ES2184070T3 (es) | Derivados de oximas sustituidas utiles como antagonistas de la neuroquinina. | |
| AR004087A1 (es) | Derivado del acido fenilacetico, procedimientos y productos intermedios para su obtencion y las composiciones que los contienen | |
| MX9503529A (es) | Derivados de glicinamida, procedimiento para su preparacion y medicamentos que los contienen. | |
| TR199900501T2 (xx) | Benzamin t�revleri ve bunlar�n ila� olarak kullan�m�. | |
| SV2003001495A (es) | Compuestos oxo-azabiciclicos | |
| ES2170222T3 (es) | Derivados c-nucleosidos y su utilizacion en la deteccion de acidos nucleicos. | |
| TR199802648A3 (tr) | Gen tedavisi için nüklein asit yapilari. | |
| DK0840802T3 (da) | Fremgangsmåde til sekvensering gennem oligomerhybridisering | |
| DE69725440D1 (de) | 2-substituierte nukleosid- und oligonukleotid- derivate | |
| DE69815370D1 (de) | Fluoreszend-konjugaten von nukleosiden und von nukleotiden, ihrer verfahren zur herstellung und ihrer verwendungen | |
| ES2165050T3 (es) | Nuevos derivados cationicos de colesterilo que contienen grupos polares ciclicos. | |
| Brill et al. | Oxidative and nonoxidative formation of internucleotide linkages |