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Novel synthesis of 2'-O-methylguanosine. 2003

Suetying Chow, and Ke Wen, and Yogesh S Sanghvi, and Emmanuel A Theodorakis
Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla 92093-0358, USA.

An efficient and chemoselective synthesis of 2'-O-methylguanosine (6) has been accomplished in high yield without protection of the guanine base. The salient feature of the synthesis of 6 lies in the application of methylene-bis-(diisopropylsilyl chloride), (MDPSCl(2), 2) as a new 3',5'-O-protecting group for nucleosides. Use of CH(3)Cl as a weak electrophile and NaHMDS as a mild base was crucial to the success of the 2'-O-methylation of 3',5'-O-protected guanosine.

UI MeSH Term Description Entries
D008722 Methods A series of steps taken in order to conduct research. Techniques,Methodological Studies,Methodological Study,Procedures,Studies, Methodological,Study, Methodological,Method,Procedure,Technique
D008737 Methyl Chloride A hydrocarbon used as an industrial solvent. It has been used as an aerosal propellent, as a refrigerant and as a local anesthetic. (From Martindale, The Extra Pharmacopoeia, 31st ed, p1403) Chloromethane,Chloride, Methyl
D006151 Guanosine A purine nucleoside that has guanine linked by its N9 nitrogen to the C1 carbon of ribose. It is a component of ribonucleic acid and its nucleotides play important roles in metabolism. (From Dorland, 28th ed)
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular
D017655 Silicon Compounds Inorganic compounds that contain silicon as an integral part of the molecule. Compounds, Silicon

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