1-(2-Deoxy-3,5-di-O-acetyl-β-D-ribofuranosyl)-5-propynyl-4-(1,2,4-triazol-1-yl)pyrimidine-2(1H)-one 在
乙醇 作用下,
以
1,4-二氧六环 、 水 为溶剂,
反应 16.0h,
以to give 0.04 g (30%) of pure product的产率得到2'-脱氧-5-(1-丙炔-1-基)-胞苷
[EN] siRNAs WITH AT LEAST TWO LIGANDS AT DIFFERENT ENDS<br/>[FR] ARNSI POSSÉDANT AU MOINS DEUX LIGANDS À DEUX EXTRÉMITÉS DISTINCTES
申请人:SILENCE THERAPEUTICS GMBH
公开号:WO2019193189A1
公开(公告)日:2019-10-10
There is provided inter alia a conjugate for inhibiting expression of a target gene in a cell, said conjugate comprising a nucleic acid portion and ligand portions, said nucleic acid portion comprising at least one duplex region that comprises at least a portion of a first RNA strand and at least a portion of a second RNA strand that is at least partially complementary to the first strand, wherein said first strand is at least partially complementary to at least a portion of RNA transcribed from said target gene, said ligand portions comprising a linker moiety and a targeting ligand for in vivo targeting of cells and being conjugated exclusively to the 3' and/or 5' ends of one or both RNA strands, wherein the 5' end of the first RNA strand is not conjugated, wherein: (i) the second RNA strand is conjugated at the 5' end to the targeting ligand, and wherein (a) the second RNA strand is also conjugated at the 3' end to the targeting ligand and the 3' end of the first RNA strand is not conjugated; or (b) the first RNA strand is conjugated at the 3' end to the targeting ligand and the 3' end of the second RNA strand is not conjugated; or (c) both the second RNA strand and the first RNA strand are also conjugated at the 3' ends to the targeting ligand; or (ii) both the second RNA strand and the first RNA strand are conjugated at the 3' ends to the targeting ligand and the 5' end of the second RNA strand is not conjugated.
Oligodeoxynucleotides containing C-5 propyne analogs of 2′-deoxyuridine and 2′-deoxycytidine
作者:Brian C. Froehler、Shalini Wadwani、Terry J. Terhorst、Sonja R. Gerrard
DOI:10.1016/s0040-4039(00)79079-4
日期:1992.9
Oligodeoxynucleotides (ODN) containing 5-(1-propynyl)-2′-deoxyuridine and 5-(1-propynyl)-2′-deoxycytidine significantly enhance double-helix formation with single strand RNA and 5-(1-propynyl)-2′-deoxyuridine significantly enhances triple-helix formation with double stranded DNA.
New s-adenosyl-L-methionine analogues with extended activated groups for transfer by methyltransferases
申请人:RWTH Aachen
公开号:EP1712557A1
公开(公告)日:2006-10-18
S-Adenosyl-L-methionine analogues of formula (I)
wherein wherein R comprises a carbon-carbon double bond, carbon-oxygen double bond, carbon-sulfur double bond, carbon-nitrogen double bond, a carbon-carbon triple bond, carbon-nitrogen triple bond or an aromatic carbocyclic or heterocyclic system in β-position to the sulfonium center,
X- is an organic or inorganic anion carrying one or more negative charges,
Z is -CR1R2-, -O-, -S- or -NR3- and
R1, R2and R3 are independently selected from H, D and C1 - C12 alkyl.
Enhanced triple-helix and double-helix formation with oligomers containing modified pyrimidines
申请人:——
公开号:US20030170680A1
公开(公告)日:2003-09-11
Novel oligomers are disclosed which have enhanced ability with respect to forming duplexes or triplexes compared with oligomers containing only conventional bases. The oligomers contain the bases 5-(1-propynyl)uracil, 5-(1-propynyl)cytosine or related analogs. The oligomers of the invention are capable of (i) forming triplexes with various target sequences such as virus or oncogene sequences by coupling into the major groove of a target DNA duplex at physiological pH or (ii) forming duplexes by binding to single-stranded DNA or to RNA encoded by target genes. The oligomers of the invention can be incorporated into pharmaceutically acceptable carriers and can be constructed to have any desired sequence, provided the sequence normally includes one or more bases that is replaced with the analogs of the invention. Compositions of the invention can be used as pharmaceutical agents to treat various diseases such as those caused by viruses and can be used for diagnostic purposes in order to detect viruses or disease conditions.
Polynucleotides encoding insect glutaminyl cyclase and uses thereof
申请人:——
公开号:US20030013177A1
公开(公告)日:2003-01-16
The invention provides polynucleotides encoding insect glutaminyl cyclase, as well as polypeptides encoded thereby. The invention further provides host cells comprising expression vectors comprising polynucleotides of the invention. Isolated polypeptides and host cells of the invention are useful in methods of screening for agents that reduce glutaminyl cyclase activity. Such agents are useful as pesticides.