Journal
TETRAHEDRON LETTERS
Volume 127, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2023.154686
Keywords
Closo-carborane; Nido-carborane; Glutamic acid; Lysine; Purine
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A series of new purine and 2-aminopurine conjugates with closo- or nido-carborane fragments attached via polyfunctional amino acid residues were synthesized. Derivatives of (S)-lysine and (S)-glutamic acid containing two closo-carborane residues and a free carboxyl group were used as boron-containing building blocks. The obtained purine and 2-aminopurine conjugates containing 18-20 boron atoms per molecule possess good solubility in water and aqueous ethanol, making them potential agents for boron delivery to tumor cells in boron neutron capture therapy.
A number of new purine and 2-aminopurine conjugates with closo- or nido-carborane fragments attached via polyfunctional amino acid residues were synthesized. Derivatives of (S)-lysine and (S)-glutamic acid containing two closo-carborane residues and a free carboxyl group were used as boron-containing building blocks. It has been found that the obtained purine and 2-aminopurine conjugates containing 18-20 boron atoms per molecule possess good solubility in water and aqueous ethanol (up to 75 mg/mL), which allows us to consider them as potential agents for boron delivery to tumor cells in boron neutron capture therapy.
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