1
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McPherson AK, Capaldi D, Chen L, Olsen P. An Improved Process for the Manufacture of 5′- O-(4,4′-Dimethoxytrityl)- N2-isobutyryl-2′- O-(2-methoxyethyl)guanosine. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrew K. McPherson
- Ionis Pharmaceuticals, Inc., 2855 Gazelle Court, Carlsbad, California 92010, United States
| | - Daniel Capaldi
- Ionis Pharmaceuticals, Inc., 2855 Gazelle Court, Carlsbad, California 92010, United States
| | - Lijian Chen
- Ionis Pharmaceuticals, Inc., 2855 Gazelle Court, Carlsbad, California 92010, United States
| | - Philip Olsen
- Ionis Pharmaceuticals, Inc., 2855 Gazelle Court, Carlsbad, California 92010, United States
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2
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Tripathi S, Misra K, Sanghvi YS. Design and Synthesis of Some New α‐Phenyl Cinnamoyl Derivatives for Selective Protection of Purine Nucleosides. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397910500278867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Snehlata Tripathi
- a Nucleic Acids Research Laboratory, Department of Chemistry , University of Allahabad , Allahabad , India
| | - Krishna Misra
- a Nucleic Acids Research Laboratory, Department of Chemistry , University of Allahabad , Allahabad , India
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3
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Díaz-Rodríguez A, Fernández S, Sanghvi YS, Ferrero M, Gotor V. Novel Chemoenzymatic Protocol for the Synthesis of 3‘-O-Dimethoxytrityl-2‘-deoxynucleoside Derivatives as Building Blocks for Oligonucleotide Synthesis. Org Process Res Dev 2006. [DOI: 10.1021/op050253i] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Alba Díaz-Rodríguez
- Departamento de Química Orgánica e Inorgánica and Instituto de Biotecnología de Asturias, Universidad de Oviedo, 33071-Oviedo (Asturias), Spain, and Rasayan Inc., 2802 Crystal Ridge Road, Encinitas, California 92024-6615, U.S.A
| | - Susana Fernández
- Departamento de Química Orgánica e Inorgánica and Instituto de Biotecnología de Asturias, Universidad de Oviedo, 33071-Oviedo (Asturias), Spain, and Rasayan Inc., 2802 Crystal Ridge Road, Encinitas, California 92024-6615, U.S.A
| | - Yogesh S. Sanghvi
- Departamento de Química Orgánica e Inorgánica and Instituto de Biotecnología de Asturias, Universidad de Oviedo, 33071-Oviedo (Asturias), Spain, and Rasayan Inc., 2802 Crystal Ridge Road, Encinitas, California 92024-6615, U.S.A
| | - Miguel Ferrero
- Departamento de Química Orgánica e Inorgánica and Instituto de Biotecnología de Asturias, Universidad de Oviedo, 33071-Oviedo (Asturias), Spain, and Rasayan Inc., 2802 Crystal Ridge Road, Encinitas, California 92024-6615, U.S.A
| | - Vicente Gotor
- Departamento de Química Orgánica e Inorgánica and Instituto de Biotecnología de Asturias, Universidad de Oviedo, 33071-Oviedo (Asturias), Spain, and Rasayan Inc., 2802 Crystal Ridge Road, Encinitas, California 92024-6615, U.S.A
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4
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Tripathi S, Misra K, Sanghvi YS. FLUOROUS SILYL PROTECTING GROUP FOR 5'-HYDROXYL PROTECTION OF OLIGONUCLEOSIDES. ORG PREP PROCED INT 2005. [DOI: 10.1080/00304940509354955] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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Gukathasan R, Massoudipour M, Gupta I, Chowdhury A, Pulst S, Ratnam S, Sanghvi YS, Laneman SA. Large-scale synthesis of high purity “Phos reagent” useful for oligonucleotide therapeutics. J Organomet Chem 2005. [DOI: 10.1016/j.jorganchem.2004.10.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Schulte M, Lühring N, Keil A, Sanghvi YS. Purification of DMT-On Oligonucleotide by Simulated Moving-Bed (SMB) Chromatography. Org Process Res Dev 2005. [DOI: 10.1021/op050006e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael Schulte
- Merck KGaA, LSA R&D TS, Frankfurter Str. 250, D-64293 Darmstadt, Germany, and Rasayan, Inc., 2802 Crystal Ridge Road, Encinitas, California 92024-6615, U.S.A
| | - Nadine Lühring
- Merck KGaA, LSA R&D TS, Frankfurter Str. 250, D-64293 Darmstadt, Germany, and Rasayan, Inc., 2802 Crystal Ridge Road, Encinitas, California 92024-6615, U.S.A
| | - Andreas Keil
- Merck KGaA, LSA R&D TS, Frankfurter Str. 250, D-64293 Darmstadt, Germany, and Rasayan, Inc., 2802 Crystal Ridge Road, Encinitas, California 92024-6615, U.S.A
| | - Yogesh S. Sanghvi
- Merck KGaA, LSA R&D TS, Frankfurter Str. 250, D-64293 Darmstadt, Germany, and Rasayan, Inc., 2802 Crystal Ridge Road, Encinitas, California 92024-6615, U.S.A
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7
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Lajmi AR, Schwartz L, Sanghvi YS. Membrane Purification of an Antisense Oligonucleotide. Org Process Res Dev 2004. [DOI: 10.1021/op030057g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ajay R. Lajmi
- Scientific and Laboratory Services, Pall Life Sciences, 8780 Ely Road, Pensacola, Florida 32514, U.S.A., Pall Life Sciences, 2200 Northern Boulevard, East Hills, New York 11548, U.S.A., and Development Chemistry, Isis Pharmaceuticals, 2292 Faraday Avenue, Carlsbad, California 92008, U.S.A
| | - Larry Schwartz
- Scientific and Laboratory Services, Pall Life Sciences, 8780 Ely Road, Pensacola, Florida 32514, U.S.A., Pall Life Sciences, 2200 Northern Boulevard, East Hills, New York 11548, U.S.A., and Development Chemistry, Isis Pharmaceuticals, 2292 Faraday Avenue, Carlsbad, California 92008, U.S.A
| | - Yogesh S. Sanghvi
- Scientific and Laboratory Services, Pall Life Sciences, 8780 Ely Road, Pensacola, Florida 32514, U.S.A., Pall Life Sciences, 2200 Northern Boulevard, East Hills, New York 11548, U.S.A., and Development Chemistry, Isis Pharmaceuticals, 2292 Faraday Avenue, Carlsbad, California 92008, U.S.A
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8
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Uzagare MC, Padiya KJ, Salunkhe MM, Sanghvi YS. NBS-DMSO as a nonaqueous nonbasic oxidation reagent for the synthesis of oligonucleotides. Bioorg Med Chem Lett 2004; 13:3537-40. [PMID: 14505665 DOI: 10.1016/s0960-894x(03)00754-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new method for the oxidation of nucleoside phosphite triester into phosphate triester under nonbasic and nonaqueous conditions using NBS-DMSO in CH(3)CN has been developed. The utility of this method for solution- and solid-phase synthesis of oligonucleotide is demonstrated.
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9
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Song Q, Wang Z, Sanghvi YS. A short, novel, and cheaper procedure for oligonucleotide synthesis using automated solid phase synthesizer. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2003; 22:629-33. [PMID: 14565241 DOI: 10.1081/ncn-120021968] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Dimethylthiuram disulfide (DTD) has been developed as an efficient thiolation reagent during automated synthesis of oligonucleotides using phosphoramidite chemistry. Simultaneous thiolation and capping was accomplished by mixing DTD with capping solution B, which saved 20% of solvent consumption and compressed the four-step synthesis cycle to three. Large-scale (1 mmol) synthesis of phosphorothioate oligonucleotides has been demonstrated with excellent yield and purity.
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Affiliation(s)
- Quanlai Song
- Isis Pharmaceuticals, Inc., Carlsbad, California 92008, USA
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10
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Taj SAS, Gurumurthy P, Suresh R, Narayanan S, Suman Meenakshi S, Sanghvi YS. Process development for the synthesis of 5'-O-(4,4'-dimethoxytrityl)-N2-isobutyryl-2'-O-(2-methoxyethyl)-guanosine--a potential precursor for the second generation antisense oligonucleotides: an improved process for the preparation of 2'-O-alkyl-2,6-diaminopurine riboside. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2003; 22:1327-30. [PMID: 14565410 DOI: 10.1081/ncn-120022957] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
An efficient four step process for the preparation of 5'-O-(4,4'-dimethoxytrityl)-N2-isobutyryl-2'-O-(2-methoxyethyl)-guanosine 1 was developed. Direct 2'-O-alkylation of 2,6-diaminopurine riboside 2 was accomplished via inexpensive and commercially available reagents such as KOH, DMSO and alkyl halides at room temperature in 4-6 hrs. Pure 2'-O-(2-methoxyethyl)-DAPR 3 was isolated by crystallization from methanol. Enzymatic deamination of 3 followed by selective N2-isobutyrylation and 5'-O-dimethoxytritylation furnished desired 1 in high yield and purity. Fully optimized four step synthetic process has been scaled up to the pilot plant level.
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11
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Divakar KJ, Sawant CM, Mulla YA, Zemse DV, Sitabkhan SM, Ross BS, Sanghvi YS. Commercial-scale synthesis of protected 2'-deoxycytidine and cytidine nucleosides. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2003; 22:1321-5. [PMID: 14565409 DOI: 10.1081/ncn-120022956] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Transformation of 2'-deoxyuridine and uridine analogs to protected 2'-deoxycytidine and cytidine analogs has been investigated by two different methods. First, traditional triazolation protocol and second p-nitrophenoxylation method. Our studies conclude that the triazolation method is better and suitable for commercial scale-up.
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Affiliation(s)
- Kikkeri J Divakar
- Research and Development, Innovasynth Technologies (India) Limited, (Formerly a Division of Indian Organic Chemicals Limited), Khopoli District, Raigad, Maharashtra, India.
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12
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Guo Z, Sanghvi YS, Brammer LE, Hudlicky T. Synthesis of 2',3'-dideoxy-2',3'-didehydro nucleosides via a serendipitous route. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2001; 20:1263-6. [PMID: 11562999 DOI: 10.1081/ncn-100002532] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This paper describes a "green" synthesis of 2',3'-unsaturated 2',3'-dideoxynucleosides via an electrochemical reaction. Using this approach d4T, d4U, ddA and ddI can be synthesized in high yields.
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Affiliation(s)
- Z Guo
- Isis Pharmaceuticals, Inc., 2292 Faraday Avenue, Carlsbad, California 92008, USA
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13
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Deshmukh RR, Eriksson KO, Moore P, Cole DL, Sanghvi YS. A case study: oligonucleotide purification from gram to hundred gram scale. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2001; 20:567-76. [PMID: 11563074 DOI: 10.1081/ncn-100002333] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This article describes the purification and scale-up of ISIS 2302, a 20-mer phosphorothioate oligonucleotide by anion-exchange (AX) chromatography. The key operating parameters were optimized at gram scale and further scaled up to hundred gram. SOURCE 30Q, a high efficiency polymeric chromatographic media was used for both the small and large-scale work. High length-based purity and yield were maintained at scale-up. This purification is one of the largest demonstrations of AX purification of phosphorothioate oligonucleotide.
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Affiliation(s)
- R R Deshmukh
- Isis Pharmaceuticals, Inc., 2292 Faraday Ave., Carlsbad, California 92008, USA
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14
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Song Q, Sanghvi YS. Unexpected results and recourse in process optimization of nucleoside 3'-O-succinates. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2001; 20:1267-70. [PMID: 11563000 DOI: 10.1081/ncn-100002533] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
An improved and scalable protocol for the synthesis of 3'-O-succinates of nucleosides has been developed using succinic anhydride. As a result, formation of unwanted dimer has been completely eliminated and use of toxic and smelly reagents have been avoided during synthesis of nucleoside succinates. All succinates were isolated in pure state without silica gel column chromatography.
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Affiliation(s)
- Q Song
- Isis Pharmaceuticals, Inc., 2292 Faraday Avenue, Carlsbad, California 92008, USA
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15
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Sanghvi YS, Guo Z, Pfundheller HM, Converso A. Improved Process for the Preparation of Nucleosidic Phosphoramidites Using a Safer and Cheaper Activator. Org Process Res Dev 2000. [DOI: 10.1021/op990086k] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yogesh S. Sanghvi
- Manufacturing Process Department, Isis Pharmaceuticals, Inc., 2292 Faraday Avenue, Carlsbad, California 92008, U.S.A
| | - Zhiqiang Guo
- Manufacturing Process Department, Isis Pharmaceuticals, Inc., 2292 Faraday Avenue, Carlsbad, California 92008, U.S.A
| | - Henrik M. Pfundheller
- Manufacturing Process Department, Isis Pharmaceuticals, Inc., 2292 Faraday Avenue, Carlsbad, California 92008, U.S.A
| | - Antonella Converso
- Manufacturing Process Department, Isis Pharmaceuticals, Inc., 2292 Faraday Avenue, Carlsbad, California 92008, U.S.A
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