Particular compounds having a fluorene skeleton are superior in broad utility and stability, as a protecting reagent for liquid phase synthesis of amino acids and/or peptides.
The present invention provides a protecting reagent that can be removed in a high yield even under acidic conditions and can afford a resulting product at a high purity in an organic synthesis reaction such as peptide synthesis and the like. The inventive protecting reagent is particular benzylic compound having only one hydroxyl group substituted by an organic group having an aliphatic hydrocarbon group having a carbon number of not less than 14.
The present invention provides a protecting reagent that can be removed in a high yield even under acidic conditions and can afford a resulting product at a high purity in an organic synthesis reaction such as peptide synthesis and the like. The inventive protecting reagent is particular benzylic compound having only one hydroxyl group substituted by an organic group having an aliphatic hydrocarbon group having a carbon number of not less than 14.
Provided is a protecting reagent which can undergo deprotection in high yield even under acidic conditions in organic synthesis, e.g., peptide synthesis, and which enables high-purity products to be obtained. The protecting reagent is a benzyl compound represented by formula(I), which has only one hydroxyl group substituted by an organic group comprising an aliphatic hydrocarbon group and having 14 or more carbon atoms in total. [In formula(I), Y represents a hydroxyl group or -NHR (R represents a hydrogen atom, an alkyl, or an aralkyl); Ra represents an organic comprising an aliphatic hydrocarbon group, the total number of carbon atoms of the organic group being 14 or more; the n Rbs each independently represents a C1-6 alkoxy, a halogen atom, or C1-6 alkyl optionally substituted by one or more halogen atoms; and n is an integer of 0-4.]