- Chemical synthesis of 4′-thio and 4′-sulfinyl pyrimidine nucleoside analogues
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Analogues of the canonical nucleosides required for nucleic acid synthesis have a longstanding presence and proven capability within antiviral and anticancer research. 4′-Thionucleosides, that incorporate bioisosteric replacement of furanose oxygen with sulfur, represent an important chemotype within this field. Established herein is synthetic capability towards a common 4-thioribose building block that enables access to thio-ribo and thio-arabino pyrimidine nucleosides, alongside their 4′-sulfinyl derivatives. In addition, this building block methodology is templated to deliver 4′-thio and 4′-sulfinyl analogues of the established anticancer drug gemcitabine. Cytotoxic capability of these new analogues is evaluated against human pancreatic cancer and human primary glioblastoma cell lines, with observed activities ranging from low μM to >200 μM; explanation for this reduced activity, compared to established nucleoside analogues, is yet unclear. Access to these chemotypes, with thiohemiaminal linkages, will enable a wider exploration of purine and triphosphate analogues and the application of such materials for potential resistance towards relevant hydrolytic enzymes within nucleic acid biochemistries.
- Guinan, Mieke,Hawes, Chris S.,Huang, Ningwu,Lima, Marcelo A.,Miller, Gavin J.,Smith, Mark
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p. 1401 - 1406
(2022/02/25)
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- SYNTHETIC INTERMEDIATE OF 1-(2-DEOXY-2-FLUORO-4-THIO-?-D-ARABINOFURANOSYL)CYTOSINE, SYNTHETIC INTERMEDIATE OF THIONUCLEOSIDE, AND METHOD FOR PRODUCING THE SAME
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A compound represented by a formula [1D] as shown below (wherein R1A, R1B, R2A, R2B, R3A and R3B represent a hydrogen atom, an optionally substituted C1-6 alkyl group, and the li
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- A facile and practical synthesis of peracylated 4-thio-D-ribofuranoses from D-glucose
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(Chemical Equation Presented) A practical synthesis of a peracylated 4-thio-D-ribofuranose 14 starting from inexpensive D-glucose is described. The C2-C6 portion of D-glucose was utilized, in which sulfur was introduced to C5 in two consecutive displacement reactions with net retention of configuration under mild conditions.
- Sun, Zhi-Hua,Wang, Bing
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p. 2462 - 2465
(2008/09/19)
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