Amino Acids

  1. PotM: Asp(CSY) – Tackling Aspartimide Formation

    Fmoc-Asp(CSY)-OH – an innovative building block to suppress aspartimide formation during peptide synthesis by utilizing cyanosulfurylide as carboxylic acid protecting group. Read on to find our more!

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  2. Adamantyls are a Chemist’s Best Friend

    The highly lipophilic, bulky adamantyl motif is a promising and validated building block to increase the drug-qualities of lead compounds without increasing their toxicity.

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  3. Aminooxy-Amino Acid Derivatives

    Herein, we present aminooxy-amino acids reported for peptide synthesis via oxime ligation, cyclization via oxime formation, derivatization e.g. by glycosylation, or chelation. Read on to find out more.

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  4. Arginine Derivatives Suitable for Side-Chain Derivatization

    Herein we present two arginine derivatives, in which the native guanidino group is replaced by an isosteric amino-functionalized carbamoylated guanidino group that can serve as an attachment point for further derivatization.

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  5. Bulky Aspartate Protecting Groups to Avoid Aspartimide Formation

    Frustrated by aspartimide formation during peptide synthesis? Iris Biotech presents aspartate derivatives with bulky side chain protecting groups that minimize the formation of aspartimide-related side-products.

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  6. PotM: SIT – A New Cysteine Protecting Group

    The new disulfide-based protecting group sec-isoamyl mercaptan (SIT) is fully compatible with Fmoc- and Boc-SPPS and can easily be removed reductively upon addition of dithiothreitol.

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  7. Cyclopropyl Modification

    Cyclopropanes represent important design elements in medicinal chemistry and are widely present in drug compounds. Read on to find out more about their full potential.

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  8. Amino-Methylcoumarins as Fluorescent Labels

    Enzymatically-activatable probes based on 7-amino-4-methylcoumarin (AMC) represent versatile tools for the detection and localization of proteolytic enzyme activities. Read on to find out more.

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  9. Modifications of Methionine

    Methionine is particularly prone to oxidation by atmospheric oxygen in vitro but also by reactive oxygen species in vivo, resulting in the corresponding sulfoxide and sulfone. Read on to find out more.

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  10. Product of the Month: Fluorinated Amino Acids

    One approach for the design of bioactive peptides with improved pharmacological properties is the derivatization of amino acid building blocks with fluorine. Find out more about the advantages of fluorinated peptides.

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