Oligonucleotide synthesis with substituted aryl carboxylic acids as activators
First Claim
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1. A composition comprising a secondary amine and an in situ generated compound of formula Ia or Ib:
- ##STR7## wherein;
B is a purine or pyrimidine base;
R is a hydroxyl-protecting group;
R'"'"' is a substituted aryl;
R" is selected from the group consisting of lower alkyl, lower alkoxy, NCCH2 CH2 O--, NCCH2 CH2 MeO--, NCCH2 CMe2 O--, Cl3 CCH2 O--, Cl3 CCMe2 O--, C6 H5 SO2 CH2 CH2 O--, MeSO2 CH2 CH2 O--, and NO2 C6 H4 CH2 CH2 O--.
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Abstract
A process for synthesizing oligonucleotides by phosphoramidite chemistry wherein the improvement is the use of substituted aryl carboxylic acids as the activators. These activators produce in situ nucleotide intermediates in which the substituted arylcarbonyl group has displaced the amidite moiety.
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Citations
13 Claims
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1. A composition comprising a secondary amine and an in situ generated compound of formula Ia or Ib:
- ##STR7## wherein;
B is a purine or pyrimidine base;
R is a hydroxyl-protecting group;
R'"'"' is a substituted aryl;
R" is selected from the group consisting of lower alkyl, lower alkoxy, NCCH2 CH2 O--, NCCH2 CH2 MeO--, NCCH2 CMe2 O--, Cl3 CCH2 O--, Cl3 CCMe2 O--, C6 H5 SO2 CH2 CH2 O--, MeSO2 CH2 CH2 O--, and NO2 C6 H4 CH2 CH2 O--. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- ##STR7## wherein;
Specification