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Conditions: (a) para-fluorobenzylthiol, (para-fluorobenzyl)disulfane, NEt3, THF, 23 °C. (b) NaBH4, MeOH, THF; S-(phenylsulfonyl)-l-glutathione hydrogen chloride, NEt3, MeOH, THF, 23 °C. (c) l-Glutathione, NEt3, D2O, CD3CN, 23 °C.
