WO1996014277A1 - Synthesis of 35s-labeled oligonucleotides with 3h-1,2-benzodithiol-3-1,1-dioxide - Google Patents
Synthesis of 35s-labeled oligonucleotides with 3h-1,2-benzodithiol-3-1,1-dioxide Download PDFInfo
- Publication number
- WO1996014277A1 WO1996014277A1 PCT/US1995/014259 US9514259W WO9614277A1 WO 1996014277 A1 WO1996014277 A1 WO 1996014277A1 US 9514259 W US9514259 W US 9514259W WO 9614277 A1 WO9614277 A1 WO 9614277A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- benzodithiol
- acid
- dioxide
- compound
- oligonucleotides
- Prior art date
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- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B59/00—Introduction of isotopes of elements into organic compounds ; Labelled organic compounds per se
- C07B59/002—Heterocyclic compounds
Definitions
- the invention relates to synthesis of 35 S-labeled 3H-1,2 benzodithiol-3-one-l,l dioxide (1) and its use in the preparation of site-specifically 35 S-labeled oligonucleotides.
- Zamecnik U.S. Patent No. 5,149,798 (1992), discloses optimized synthesis of oligonucleotides by the H-phosphonate approach.
- H-phosphonate chemistry Garegg et al., Chem. Scr. 25, 280-282 (1985). It is difficult to achieve site-specific labeling of phosphorothioates using H-phosphonate chemistry, however, and it is inconvenient to carry out preparation of 35 S-labeled oligonucleoside phosphorothioate constructs, such as those with (a) mixed ribonucleotide- deoxyribonucleotide population ("hybrid oligos"), (b) heterogeneous backbones, e.g., deoxyribonucleotide-methyl phosphonate ("chimeric oligos”) and (c) mixed phosphodiester-phosphorothioate (PO-PS) backbones. In order to ensure stereochemically
- the present invention provides new compounds and improved methods for synthesizing 35 S-labeled oligonucleoside phosphorothioates.
- This invention comprises several aspects.
- the present invention provides a novel compound useful for synthesizing oligonucleotide phosphorodiioates labelled with 33 S.
- This compound 35 S-3H-l,2-benzodithiol-3-one-l,l dioxide (1), has the structure
- a new method of synthesizing 35 S-3H-1,2- benzodithiol-3-one-l,l dioxide (1) is provided.
- An important consequence of this method is that it allows for the preparation of a variety of 35 S-labeled oligonucleotide phosphorothioates and thereby facilitates pharmacokinetic studies of these compounds.
- the method of synthesizing 3$ S-3H-l,2-benzodithiol-3-one-l,l dioxide (1) is depicted in Fig. 2 and comprises first contacting 35 S-thiobenzoic acid (4) with thiosalicylic acid (5) to yield the condensation product, 35 S-3 H 1 ,2-benzodithiol-3-one (2).
- 35 S-3 H 1 ,2- benzodithiol-3-one (2) is then oxidized to yield the desired product, 35 S-3H-1,2- benzodithiol-3-one-l,l dioxide (1).
- a new method of synthesizing 35 S-labelled oligonucleotides comprises contacting 35 S-3H-l,2-benzodithiol- 3-one-l,l dioxide (1) with an oligonucleotide susceptable to oxidative sulfurization.
- the method of 35 S labelling an oligonucleotide synthesized via the phosphoramidite method is depicted in Fig. 3.
- Other methods are contemplated, however, such as oxidative sulfurization of alkyl- and/or aryl-phosphites to yield the corresponding 35 S-labelled alkyl- and/or aryl-phosphonothioate.
- 35 S-3H-l,2-benzodithiol-3-one-l,l dioxide (1) can be used for any purpose and in any way that its unlabelled analog, 3H-1,2- benzodithiol-3-one-l,l dioxide, can be used.
- Figure 1 depicts the synthesis of 35 S-thiobenzoic acid (4) from 35 S elemental sulfur and thiobenzoic acid.
- Figure 2 depicts the synthesis of 35 S-3H-l,2-benzodithiol-3-one-l,l dioxide (1) from 35 S-thiobenzoic acid (4) and thiosalicylic acid (5) via the intermediate 35 S-3H-1,2- benzodithiol-3-one (2).
- Figure 3 depicts the 3 S labelling of an oligonucleotide synthesized by the phosphoramidate method.
- Figure 5 displays 35 S-labelled oligonucleotides synthesized according to the methods of the present invention.
- Figure 6 displays and autoradiogram of oligonucleotides SEQ. ID NOs. 5-7 (purified) and SEQ. ID. NO. 8 (crude) subjected to PAGE.
- oligonucleotides Because of the ever-increasing interest in antisense oligonucleotides as therapeutic agents, there is a need to provide methods whereby the pharmacokinetic properties of these compounds can be tested. It is necessary to determine biodistribution, as well as to determine the half-lives and degradation products.
- One method of accomplishing these tasks is to label the oligonucleotides with 35 S, a common isotopic label used for tracing and detecting biological compounds.
- the present invention provides a new compound useful for synthesizing 35 S- labelled antisense oligonucleotides, a new method of synthesizing the compound and new methods for 3S S-labelling oligonucleotides.
- the first aspect of the invention comprises a new compound, 35 S-3H-1,2- benzodithiol-3-one-l,l dioxide (1), having the following structure
- a second aspect of the invention comprises a new method of synthesizing 35 S -3H-l,2-benzodithiol-3-one- 1,1 dioxide.
- This method is a modification of the method of Beaucage et al. '097, for example.
- An important benefit of this method is that it enables production of 35 S-3H-l,2-benzodithiol-3-one-l,l dioxide (1).
- the method of this invention uses a reactant in which the 35 S label is easily incorporated. The prior art teaches that the precursor to 3H-l,2-benzodithiol-3-one-l,l dioxide,
- 3H-l,2-benzodithiol-3-one can be produced by mixing 2-thiolbenzoic acid and thiolacetic acid in sulfuric acid.
- 2-thiolbenzoic acid and thiolacetic acid in sulfuric acid E.g., Beaucage et al. '097.
- 35 S-thiolacetic acid was prepared by a high temperature (125°C) exchange reaction between thiolacetic acid and elemental 35 S using a reported procedure.
- 125°C 125°C
- the desired product 35 S-1 as a white crystalline solid in 30% chemical yield (based on the amount of 5 used) and having a specific activity of 90 ⁇ Ci/ ⁇ mol.
- the reaction mixture should be worked up immediately after its completion to avoid decomposition of 35 S-1.
- the synthetic method according to this aspect of the invention comprises first contacting 35 S-thiobenzoic acid (4) with thiosalicylic acid (5) to yield the condensation product, 35 S-3 H l,2-benzodithiol-3-one (2).
- This reaction is acid catalyzed.
- sulfuric acid is used, although any suitably strong acid may be used.
- 35 S-3H 1 ,2-benzodithiol-3-one (2) is then oxidized to yield the desired product, 5 S-3H- 1 ,2- benzodithiol-3-one-l,l dioxide (1).
- oxidizing agent e.g., hydrogen peroxide and trifluoroacetic acid, trifluoro peroxyacetic acid or other oxidizing agents such as oxone, sodium periodate NaOCl, RuCl 3 and reagents used in the oxidation of sulfide to sulfone. See, e.g., M. ⁇ udlicky, Oxidation in Organic Chemistry, ACS Monograph 186, 1990.
- oxidation is accomplished with hydrogen peroxide and trifluoroacetic acid. This scheme is depicted in Fig. 2.
- the third aspect of the present invention comprises a new method for 35 S-labelling oligonucleotides.
- the method can be used to selectively place the 3$ S at any desired internucleoside linkage. Anywhere from one to all internucleoside linkages may be labelled with 35 S.
- the method comprises contacting 35 S-3H-l,2-benzodithiol-3-one-l,l dioxide (1) with an oligonucleotide susceptible to oxidative sulfurization.
- the oligonucleotide is synthesized by the phosphoramidite method, and 35 S- 3H- 1 ,2-benzodithiol-3-one- 1 , 1 dioxide (1) is contacted with the oligonucleotide having one or more ⁇ -cyanoethyl phosphotriester internucleoside linkages under standard conditions known in the art.
- an oligonucleotide having one or more alkyl- and/or aryl-phosphite internucleotide linkages is contacted with 35 S-3H-1,2- benzodithiol-3-one-l,l dioxide (1) to yield the corresponding 35 S-labelled alkyl- and/or aryl-phosphonothioate.
- This reaction using the non-radiolabeled oxidative sulfurization agent, is taught by Padmapriya et al., supra.
- 35 S-3H-l,2-benzodithiol-3-one-l,l dioxide (1) can be used to 35 S-label any compound that is capable of being sulfurized by the unlabeled analog 3H-l,2-benzodithiol-3-one-l,l dioxide.
- the present method is capable of 35 S labelling carbohydrates, proteins, and any macromolecule into which one can incorporate an 35 S label by oxidative thiolation.
- RNA can be labelled with 3S S in a site-specific manner, as can phosphopeptides.
- Phosphorothioate and sulfur analogs of phospholipids, glycerophospholipids, and phosphocar bohydtrates can also be labeled with 35 S.
- 35 S can be inserted into thiophosphates and thiotriphosphates (e.g., ATP) and then incorporated into any molecule using chemical or enzymatic phosphorylation reactions.
- thiophosphates and thiotriphosphates e.g., ATP
- Ion-exchange ⁇ PLC was done using a GEN-PAK FAX column (4.6 X 100 mm) at 65°C using a gradient (80% A to 100 % B over 50 min.) of Buffer A (25 raM Tris ⁇ CL. p ⁇ 8.5, 10% C ⁇ 3 CN) to Buffer B (25 mM Tris HC1, 2 M LiCl, pH 8.5, % CH 3 CN) and a flow rate of 0.5 ml/min.
- Buffer A 25 raM Tris ⁇ CL. p ⁇ 8.5, 10% C ⁇ 3 CN
- Buffer B 25 mM Tris HC1, 2 M LiCl, pH 8.5, % CH 3 CN
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95939047A EP0790965A1 (en) | 1994-11-07 | 1995-11-06 | Synthesis of ?35 s-labeled oligonucleotides with 3h-1,2-benzodithiol-3-1,1-dioxide |
JP8515428A JPH10509447A (en) | 1994-11-07 | 1995-11-06 | <35> Synthesis of S-labeled oligonucleotide using 3H-1,2-benzodithiol-3-1,1-dioxide |
AU41013/96A AU4101396A (en) | 1994-11-07 | 1995-11-06 | Synthesis of 35s-labeled oligonucleotides with 3h-1,2-benzodithiol-3-1,1-dioxide |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/335,100 US5833944A (en) | 1994-11-07 | 1994-11-07 | Procedure for the solid phase synthesis of 35 S-labeled oligonucleotides with 3H-1,2-benzodithiol-3-one-1,1-dioxide |
US49333995A | 1995-06-21 | 1995-06-21 | |
US49325795A | 1995-06-21 | 1995-06-21 | |
US08/493,257 | 1995-06-21 | ||
US08/493,339 | 1995-06-21 | ||
US08/335,100 | 1995-06-21 |
Publications (1)
Publication Number | Publication Date |
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WO1996014277A1 true WO1996014277A1 (en) | 1996-05-17 |
Family
ID=27407027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1995/014259 WO1996014277A1 (en) | 1994-11-07 | 1995-11-06 | Synthesis of 35s-labeled oligonucleotides with 3h-1,2-benzodithiol-3-1,1-dioxide |
Country Status (5)
Country | Link |
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EP (1) | EP0790965A1 (en) |
JP (1) | JPH10509447A (en) |
CN (1) | CN1165508A (en) |
AU (1) | AU4101396A (en) |
WO (1) | WO1996014277A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9388416B2 (en) | 2003-09-09 | 2016-07-12 | Geron Corporation | Modified oligonucleotides for telomerase inhibition |
US9796747B2 (en) | 2014-05-01 | 2017-10-24 | Geron Corporation | Oligonucleotide compositions and methods of making the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5003097A (en) * | 1989-10-02 | 1991-03-26 | The United States Of America As Represented By The Department Of Health And Human Services | Method for the sulfurization of phosphorous groups in compounds |
-
1995
- 1995-11-06 JP JP8515428A patent/JPH10509447A/en active Pending
- 1995-11-06 EP EP95939047A patent/EP0790965A1/en not_active Withdrawn
- 1995-11-06 WO PCT/US1995/014259 patent/WO1996014277A1/en not_active Application Discontinuation
- 1995-11-06 AU AU41013/96A patent/AU4101396A/en not_active Abandoned
- 1995-11-06 CN CN 95196093 patent/CN1165508A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5003097A (en) * | 1989-10-02 | 1991-03-26 | The United States Of America As Represented By The Department Of Health And Human Services | Method for the sulfurization of phosphorous groups in compounds |
Non-Patent Citations (3)
Title |
---|
C. A. STEIN ET AL: "Preparation of 35S-labeled polyphosphorothioate oligodeoxyribonucleotides by use of hydrogen phosphonate chemistry", ANALYTICAL BIOCHEMISTRY, vol. 188, no. 1, 1 July 1990 (1990-07-01), DULUTH, pages 11 - 16 * |
S. AGRAWAL ET AL: "Pharmacokinetics, biodistribution, and stability of oligonucleotide phosphorothioates in mice", PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF USA, vol. 88, no. 17, 1 September 1991 (1991-09-01), WASHINGTON US, pages 7595 - 7599 * |
S. KAWAMURA ET AL: "Reaction of acetyl aralkyl disulfides with triphenylphosphine", CHEMISTRY LETTERS, no. 12, pages 1231 - 1234 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9388416B2 (en) | 2003-09-09 | 2016-07-12 | Geron Corporation | Modified oligonucleotides for telomerase inhibition |
US9388415B2 (en) | 2003-09-09 | 2016-07-12 | Geron Corporation | Modified oligonucleotides for telomerase inhibition |
US9404112B2 (en) | 2003-09-09 | 2016-08-02 | Geron Corporation | Modified oligonucleotides for telomerase inhibition |
US9657296B2 (en) | 2003-09-09 | 2017-05-23 | Geron Corporation | Modified oligonucleotides for telomerase inhibition |
US10196641B2 (en) | 2003-09-09 | 2019-02-05 | Geron Corporation | Modified oligonucleotides for telomerase inhibition |
US9796747B2 (en) | 2014-05-01 | 2017-10-24 | Geron Corporation | Oligonucleotide compositions and methods of making the same |
US10392418B2 (en) | 2014-05-01 | 2019-08-27 | Geron Corporation | Oligonucleotide compositions and methods of making the same |
US11299511B2 (en) | 2014-05-01 | 2022-04-12 | Geron Corporation | Oligonucleotide compositions and methods of making the same |
US11739114B2 (en) | 2014-05-01 | 2023-08-29 | Geron Corporation | Oligonucleotide compositions and methods of making the same |
Also Published As
Publication number | Publication date |
---|---|
AU4101396A (en) | 1996-05-31 |
EP0790965A1 (en) | 1997-08-27 |
CN1165508A (en) | 1997-11-19 |
JPH10509447A (en) | 1998-09-14 |
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