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.]
OLIGONUCLEOTIDE PRODUCTION METHOD, AND NUCLEOSIDE, NUCLEOTIDE, OR OLIGONUCLEOTIDE
申请人:AJINOMOTO CO., INC.
公开号:EP3398955A1
公开(公告)日:2018-11-07
The present invention provides a production method oligonucleotide, including (1) a step of condensing a nucleoside, nucleotide or oligonucleotide (a) or the like wherein a 5'-hydroxy group is not protected and a nucleoside, nucleotide or oligonucleotide (b) wherein a 5'-hydroxy group is protected in a non-polar solvent to give a reaction solution containing a phosphite triester product (c); (3) a step of oxidizing or sulfurizing the phosphite triester product (c) to give a reaction solution containing an oligonucleotide (d) wherein the 5'-hydroxy group is protected; (4) a step of deprotecting the oligonucleotide (d) to give a reaction solution containing an oligonucleotide (e) wherein the 5'-hydroxy group is not protected; and (6) a step of adding a polar solvent to the reaction solution containing the oligonucleotide (e) and purifying the oligonucleotide (e) by solid-liquid separation or extraction.
Precipitation promoter and precipitation method in which same is used
申请人:AJINOMOTO CO., INC.
公开号:US10464966B2
公开(公告)日:2019-11-05
Precipitation promoters, which are an organic compound having one or more linear aliphatic hydrocarbon groups having not less than 10 carbon atoms, wherein the aliphatic hydrocarbon group has not less than 20 carbon atoms in total are useful for precipitating an organic compound protected by an organic group having one or more aliphatic hydrocarbon groups having not less than 10 carbon atoms from a solvent.