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A reaction of 8‐bromoguanosine with benzyl disulfide in the presence of tri‐n‐butylphosphine in aprotic or protic solvent afforded guanosine instead of 8‐bromo‐5′‐benzylthio‐5′‐deoxyguanosine through an unexpected reductive debromination.
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Chern et al. (1987) studied this question.
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