Separation of [Sp]-3'-O-(5'-dimethoxytritylthymidyl)-5'-O-(3'camphanoyl thymidyl)-O-methyl phosphite. |
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| Authors: | A Wilk B Uznanski W J Stec |
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| Affiliation: | Polish Academy of Sciences, Department of Bioorganic Chemistry, Lodz. |
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| Abstract: | First isolation of diastereoisomerically enriched (d.p. 95%) [Sp]-3'-O-(5'-dimethoxytrityl tjymidyl)-5'-O-(3'-camphanoyl thymidyl)-O-methyl phosphite (1) allowed to assign, via sulfuration and deprotection, its absolute configuration as Sp. Its reactions with methyl iodide, dimethoxytrityl chloride, or water, respectively, allowed to confirm correctness of assignment of absolute configuration in diastereisomers of TPMeT, and to assign absolute configuration in corresponding diastereoisomers of TPDMTT and TPHT. |
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