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"A photocleavable linker for the preparation of carboxylic acids. 4-[4-(1-Hydroxyethyl)-2-methoxy-5-nitrophenoxy]butyric acid is a photolabile linker which can be bound to amino- and hydroxymethyl resins. In the synthesis of sensitive acids, 4-[4-(1-Hydroxyethyl)-2-methoxy-5-nitrophenoxy]butyric acid may also play a key role. 4-[4-(1-Hydroxyethyl)-2-methoxy-5-nitrophenoxy]butyric acid may be used in the solid phase preparation of carboxylic acids. Used for preparation of photolabile linking groups for use in solid phase synthesis."
Fmoc-(S)-2-(4-pentenyl)Alanine has been developed as a building block for the purpose of preparing stapled peptides via transition metal catalyzed ring closing metathesis. Stapled peptides showed enhanced stability, cell penetrating ability and target affinity, which greatly increases the chances for peptide drug discovery.