DNA−Protein Cross-Linking: Model Systems for Pyrimidine−Aromatic Amino Acid Cross-Linking
摘要:
We have synthesized simple model systems to explore the possibility of photo-cross-linking between the pyrimidine bases and the side chains of the aromatic amino acids. Thymine/phenylalanine and thymine/tyrosine models gave cross-links, and thymine/tryptophan models gave complex mixtures; the cytosine/phenylalanine model was unreactive. The quantum yields for the model cross-linking reactions were 18-46 times smaller than those for thymine dimer formation. Biphotonic excitation contributes little to the yield of these reactions.
Substituted benzazoles and methods of their use as inhibitors of Raf kinase
申请人:——
公开号:US20040122237A1
公开(公告)日:2004-06-24
New substituted benz-azole compounds, compositions and methods of inhibition of Raf kinase activity in a human or animal subject are provided. The new compounds compositions may be used either alone or in combination with at least one additional agent for the treatment of a Raf kinase mediated disorder, such as cancer.
2,6-Disubstituted quinazolines, quinoxalines, quinolines and isoquinolines and methods of their use as inhibitors of RAF kinase
申请人:Ramurthy Savithri
公开号:US20050085482A1
公开(公告)日:2005-04-21
New substituted quinazoline, quinoxaline, quinoline and isoquinoline compounds, compositions and methods of inhibition of Raf kinase activity in a human or animal subject are provided. The new compounds compositions may be used either alone or in combination with at least one additional agent for the treatment of a Raf kinase mediated disorder, such as cancer.
[EN] MODIFIED NUCLEIC ACID MOLECULES AND USES THEREOF<br/>[FR] MOLÉCULES D'ACIDE NUCLÉIQUE MODIFIÉES ET LEURS UTILISATIONS
申请人:MODERNA THERAPEUTICS INC
公开号:WO2014093924A1
公开(公告)日:2014-06-19
The present disclosure provides modified nucleosides, nucleotides, and nucleic acids, and methods of using them.
本公开提供了经修改的核苷、核苷酸和核酸,以及它们的使用方法。
The synthesis and antituberculosis activity of 5-alkynyl uracil derivatives
作者:Yana B. Platonova、Alexander N. Volov、Larisa G. Tomilova
DOI:10.1016/j.bmcl.2020.127351
日期:2020.8
A series of new 5-alkynyl-substituted uracil and uridine derivatives were synthesised via palladium-catalysed Sonogashira cross-coupling reaction of 5-bromo-pyrimidine base with terminal acetylenes with good yields in DMF at room temperature. All obtained compounds were tested for antimycobacterial activity against Mycobacetrium bovis and Mycobacterium tuberculosis (H37Ra) at concentrations of 1–100 µg/ml
Efficient solvent- and metal-free Sonogashira protocol catalysed by 1,4-diazabicyclo(2.2.2) octane (DABCO)
作者:Rafael Luque、Duncan J. Macquarrie
DOI:10.1039/b821134p
日期:——
An efficient metal-free Sonogashira coupling protocol catalysed by DABCO is reported, where very good conversions and selectivities to the cross-coupling product were obtained under mild reaction conditions. The reported solvent-, phosphane- and metal-free protocol, that uses a cheap base as catalyst, considerably improves the green credentials of the reaction.