SOLID SUPPORTS AND PHOSPHORAMIDITE BUILDING BLOCKS FOR OLIGONUCLEOTIDE CONJUGATES
申请人:AM Chemicals LLC
公开号:US20180016232A1
公开(公告)日:2018-01-18
Novel non-nucleoside solid supports and phosphoramidite building blocks for preparation of synthetic oligonucleotides containing at least one non-nucleosidic moiety conjugated to a ligand of practical interest and synthetic processes for making the same are disclosed. Furthermore, oligomeric compounds are prepared using said solid supports and phosphoramidite building blocks, preferably followed by removal of protecting groups to provide oligonucleotides conjugated to ligands of interest.
because it allows for convenient chemical initiation without the need for electrochemical setups and in the presence of air. In addition, catalytic amounts of metal-free sensitizers, such as methylene blue, can be used as excited-state electron acceptors, enabling a shift of the excitation wavelength to the far red of the azobenzene absorption (up to 660 nm) and providing quantumyields exceeding unity (up
Carcinogenic azo dyes. XVIII. Syntheses of azo dyes related to 3'-hydroxymethyl-4-(dimethylamino)azobenzene, a new potent hepatocarcinogen.
作者:YUKIO MORI、TOSHIRO NIWA、KAZUMI TOYOSHI
DOI:10.1248/cpb.29.1439
日期:——
Twenty azobenzene derivatives structurally related to 3'-hydroxymethyl-4-(dimethylamino) azobenzene (3'-CH2OH-DAB) were synthesized for the purpose of investigating their mutagenic and carcinogenic effects. They are oxidation products of 3'-Me-DAB, symmetrically substituted azo compounds, their acetyl or chloro derivatives, and their isomers. The 4-(dimethylamino) azobenzenes were prepared by coupling of the corresponding diazonium salts with N, N-dimethylaniline and the azobenzenes by reduction of the corresponding nitrobenzenes with lithium aluminum hydride or zinc in a sodium hydroxide medium. Physical characteristics of these compounds (melting point, elemental analysis, and infrared, ultraviolet, and mass spectral data) are given.
The present invention relates to hydroxamic acid derivatives that are inhibitors of histone deacetylase (HDAC). The compounds of the present invention are useful for treating cellular proliferative diseases, including cancer. Further, the compounds of the present invention are useful for treating neurodegenerative diseases, schizophrenia and stroke among other diseases. Further, the compounds of the present invention have antiprotozoal properties.
The present teaching provides a fluorescent oligonucleotide probe having a high degree of design flexibility and wide applicability, as well as the use thereof. This is an oligonucleotide probe capable of forming a stem and loop, comprising at least one fluorophore located between adjacent nucleotides in the stem and is linked to a unit represented by Formula (1) and at least one quencher located at a site capable of pairing up with the at least one fluorophore located between the adjacent nucleotides in the stem and is linked to a unit represented by Formula (2). (In the formulae, X represents the fluorophore, Y represents the quencher, R1 represents an optionally substituted C
2
or C
3
alkylene chain, R2 represents an optionally substituted C
0-2
alkylene chain, and Z represents a direct bond or linker.)