摘要:
The present invention relates to the use of a compound of formula I as a coupling reagent in forming amide or ester bonds from a reaction between a carboxylic acid and an amine or an alcohol, respectively. The compounds of formula I are especially useful as coupling reagents in the preparation of peptide bonds during peptide synthesis. In particular, the compounds of formula I are useful in promoting the formation of reactive reaction intermediates, inhibiting side reactions and in suppression of racemization. In addition, the present invention provides novel compounds of Formula I, and salts of N-oxides thereof.
摘要:
The present invention relates to the synthesis of peptide-oligonucleotide conjugates (POC). More specifically, the invention relates to a novel method for the preparation of peptide-oligonucleotide conjugates, which can be conducted under mild conditions on solid support, can be performed manually or by a synthesizer, can be used to synthesize alternating sequences of peptides and oligonucleotides, and is applicable to the synthesis of a wide variety of peptide-oligonucleotide conjugates constructed from alternate peptide and oligonucleotide blocks.
摘要:
The present invention relates to the synthesis of peptide-oligonucleotide conjugates (POC). More specifically, the invention relates to a novel method for the preparation of peptide-oligonucleotide conjugates, which can be conducted under mild conditions on solid support, can be performed manually or by a synthesizer, can be used to synthesize alternating sequences of peptides and oligonucleotides, and is applicable to the synthesis of a wide variety of peptide-oligonucleotide conjugates constructed from alternate peptide and oligonucleotide blocks.
摘要:
This invention provides a method for reducing disulfide bonds in a chemical agent, the method may include, inter alia, the step of contacting the chemical agent with 1,4-dimercapto-2,3-dihydroxybutane, wherein the 1,4-dimercapto-2,3dihydroxybutane is prepared by a non-stereoselective reaction. This invention further provides a method for protecting a protein against oxidation, the method may include, inter alia, the step of contacting the protein with 1,4-dimercapto-2,3dihydroxybutane, wherein the 1,4-dimercapto-2,3-dihydroxybutane is prepared by a non-stereoselective reaction. This invention further provides a method for reducing a disulfide bond in a. chemical agent, the method may include, inter alia, the step of contacting the chemical agent with a compound represented by the structure of formula (I) wherein R1, R2 and R3 are the same or different, independently of each other represent H, an unsubstituted or substituted linear, branched or cyclic hydroxyalkyl, an unsubstituted or substituted linear, branched or cyclic hydroxyalkenyl or an unsubstituted or substituted hydroxyaryl, an unsubstituted or substituted linear, branched or cyclic alkoxyalkyl ether, an unsubstituted or substituted linear, branched or cyclic alkoxy alkoxyalkyl ether, an unsubstituted or substituted linear, branched or cyclic alkylthioalkyl ether. This invention further provides a method for protecting a protein against oxidation, the method may include, inter alia, the step of contacting the protein with a compound represented by the structure of formula (I) wherein R1, R2 and R3 are the same or different, independently of each other represent H, an unsubstituted or substituted linear, branched or cyclic hydroxyalkenyl, an unsubstituted or substituted linear, branched or cyclic hydroxyalkenyl or an unsubstituted hydroxyaryl, an unsubstituted or subsituted linear, branched or cyclic alkoxyalkyl ether, an unsubstituted or substituted linear, branched or cyclic alkoxy alkoxyalkyl ether, an unsubstituted or substituted linear, branched or cyclic alkylthioalkyl ether.
摘要:
The present invention relates to the use of a compound of formula I as a coupling reagent in forming amide or ester bonds from a reaction between a carboxylic acid and an amine or an alcohol, respectively. The compounds of formula I are especially useful as coupling reagents in the preparation of peptide bonds during peptide synthesis. In particular, the compounds of formula I are useful in promoting the formation of reactive reaction intermediates, inhibiting side reactions and in suppression of racemization. In addition, the present invention provides novel compounds of Formula I, and salts of N-oxides thereof.
摘要:
A water-in-oil antioxidant composition for use as an additive to cooking oils, for inhibiting their oxidation and subsequent loss of stability and quality, wherein the water-in-oil composition comprises an exceptionally high water content, water soluble anti-oxidants, specifically ascorbic acid and anti-oxidant extracts of plants of the Labiate family, oil and an emulsifier.
摘要:
This invention provides a method for reducing disulfide bonds in a chemical agent, the method may include, inter alia, the step of contacting the chemical agent with 1,4-dimercapto-2,3-dihydroxybutane, wherein the 1,4-dimercapto-2,3dihydroxybutane is prepared by a non-stereoselective reaction. This invention further provides a method for protecting a protein against oxidation, the method may include, inter alia, the step of contacting the protein with 1,4-dimercapto-2,3dihydroxybutane, wherein the 1,4-dimercapto-2,3-dihydroxybutane is prepared by a non-stereoselective reaction. This invention further provides a method for reducing a disulfide bond in a. chemical agent, the method may include, inter alia, the step of contacting the chemical agent with a compound represented by the structure of formula (I) wherein R 1 , R 2 and R 3 are the same or different, independently of each other represent H, an unsubstituted or substituted linear, branched or cyclic hydroxyalkyl, an unsubstituted or substituted linear, branched or cyclic hydroxyalkenyl or an unsubstituted or substituted hydroxyaryl, an unsubstituted or substituted linear, branched or cyclic alkoxyalkyl ether, an unsubstituted or substituted linear, branched or cyclic alkoxy alkoxyalkyl ether, an unsubstituted or substituted linear, branched or cyclic alkylthioalkyl ether. This invention further provides a method for protecting a protein against oxidation, the method may include, inter alia, the step of contacting the protein with a compound represented by the structure of formula (I) wherein R 1 , R 2 and R 3 are the same or different, independently of each other represent H, an unsubstituted or substituted linear, branched or cyclic hydroxyalkenyl, an unsubstituted or substituted linear, branched or cyclic hydroxyalkenyl or an unsubstituted hydroxyaryl, an unsubstituted or subsituted linear, branched or cyclic alkoxyalkyl ether, an unsubstituted or substituted linear, branched or cyclic alkoxy alkoxyalkyl ether, an unsubstituted or substituted linear, branched or cyclic alkylthioalkyl ether.