The synthesis of two deoxyoligonucleotides, d(G-T-G-A-G-T-T-A-G-C-T-C-A-C) and d(G-T-G-A-G-C-T-A-A-C-T-C-A-C), corresponding to the DNA binding site for cyclic AMP receptor protein is reported. These syntheses have been completed in milligram quantities using a silica gel polymersupport methodology and mononucleotide phosphoramidites. Procedures are also reported for synthesizing diastereoisomers
The present invention provides a double-stranded polynucleotide having a sense strand polynucleotide consisting of a nucleotide sequence complementary to a target sequence in a target gene, and an antisense strand polynucleotide having a nucleotide sequence complementary to the sense strand polynucleotide, wherein an aryl or heteroaryl compound is bound to a phosphate group at the 5′-end of the antisense strand polynucleotide.
Solid phase 5′-phosphorylation of oligonucleotides
作者:Bernard Connolly
DOI:10.1016/s0040-4039(00)95757-5
日期:1987.1
S-triphenylmethyl O-methoxymorpholinophosphinyl 2-mercaptoethanol can be used to prepare 5′phosphorylated oligonucleotides. Deblocking to 5′phosphates is with AgNO3 or I2 followed by mildly basic conditions.
Synthesis of Oligodeoxyribonucleotides Involving a Rapid Procedure for Removal of Base-Protecting Groups by Use of the 4,4′,4″-Tris(benzoyloxy)trityl (TBTr) Group
作者:Mitsuo Sekine、Narihiro Masuda、Tsujiaki Hata
DOI:10.1246/bcsj.59.1781
日期:1986.6
protected building units for oligodeoxyribonucleotidesynthesis in the phosphoramidite approach were prepared in high yields by the 5′-dimethoxytritylation of N-[4,4′,4″-tris(benzoyloxy)trityl]deoxyribonucleosides followed by the 3′-phosphitylation with methoxymorpholinochlorophosphine. The solid phase synthesis of oligodeoxyribonucleotides on a controlled pore glass gel using the amidite units was examined
A 2-5A analog represented by the formula (1):
wherein m is 0 or 1; n is 0 to 2; R
1
represents an alkoxy group having from 1 to 6 carbon atoms which may be substituted, an unprotected mercapto group, a mercapto group protected by a nucleic acid synthesis protecting group, or an alkylthio group having from 1 to 4 carbon atoms which may be substituted; R
2
, R
3
, R
4
, R
5
and R
6
represent an unprotected hydroxyl group, a hydroxyl group protected by a nucleic acid synthesis protecting group, an alkoxy group having from 1 to 6 carbon atoms which may be substituted, an unprotected mercapto group, a mercapto group protected by a nucleic acid synthesis protecting group, or an alkylthio group having from 1 to 4 carbon atoms which may be substituted; R
7
represents an oxygen atom, or a —O(CH
2
CH
2
O)q-group, wherein q is 2 to 6; R
8
represents a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms which may be substituted, or a 5′-phosphorylated oligonucleotide analog which has one hydroxyl group removed from the 5′-phosphoric acid group; E
1
, E
2
, E
3
and E
4
represent a naturally occurring or modified nucleic acid unit, or a pharmacologically acceptable salt thereof.