Structure-activity relationship of leucyladenylate sulfamate analogues as leucyl-tRNA synthetase (LRS)-targeting inhibitors of Mammalian target of rapamycin complex 1 (mTORC1)
作者:Suyoung Yoon、Sung-Eun Kim、Jong Hyun Kim、Ina Yoon、Phuong-Thao Tran、Jihyae Ann、Changhoon Kim、Woong Sub Byun、Sangkook Lee、Sunghoon Kim、Jiyoun Lee、Jeewoo Lee
DOI:10.1016/j.bmc.2019.01.037
日期:2019.3
Leucyl-tRNAsynthetase (LRS) plays an important role in amino acid-dependent mTORC1 signaling, which is known to be associated with cellular metabolism and proliferation. Therefore, LRS-targeting small molecules that can suppress mTORC1 activation may provide an alternative strategy to current anticancer therapy. In this work, we developed a library of leucyladenylate sulfate analogues by extensively
The Action of Adenosine Deaminase (E.C. 3.5.4.4.) on Adenosine and Deoxyadenosine Acetates: The Crucial Role of the 5′-Hydroxy Group for the Enzyme Activity
From adenosine 1, 2′-deoxyadenosine 3 and 3′-deoxyadenosine 5 all the acetates were prepared by lipase-catalyzed reactions. Only the acetates with free 5′-hydroxy group were deaminated by adenosinedeaminase (ADA), confirming the crucial role of 5′-OH for the enzyme activity.
Modulators of Histone Methyltransferase, and Methods of Use Thereof
申请人:Epizyme, Inc.
公开号:US20160068559A1
公开(公告)日:2016-03-10
Disclosed are compounds, pharmaceutical compositions containing the compounds, and the uses of the compounds and compositions as modulators of histone methyltransferases, and for treating diseases influenced by modulation of histone methyltransferase activity.
[EN] MODULATORS OF HISTONE METHYLTRANSFERASE, AND METHODS OF USE THEREOF<br/>[FR] MODULATEURS D'HISTONE MÉTHYLTRANSFÉRASE ET LEURS PROCÉDÉS D'UTILISATION
申请人:EPIZYME INC
公开号:WO2012082436A3
公开(公告)日:2012-09-20
Nucleic Acid Related Compounds. 101. <i>S</i>-Adenosyl-<scp>l</scp>-homocysteine Hydrolase Does Not Hydrate (5‘-Fluoro)vinyl or (6‘-Halo)homovinyl Analogues Derived from 3‘-Deoxyadenosine or 3‘-(Chloro or Fluoro)-3‘-deoxyadenosine<sup>1</sup>
作者:Morris J. Robins、Vladimir Neschadimenko、Bong-Oh Ro、Chong-Sheng Yuan、Ronald T. Borchardt、Stanislaw F. Wnuk
DOI:10.1021/jo971741u
日期:1998.2.1
S-Adenosyl-L-homocysteine (AdoHcy) hydrolase is crucial for the maintenance of biomethylation. The usual mechanistic sequence involves oxidation of AdoHcy at C3' followed by elimination of L-homocysteine, Michael addition of water, and reduction to give adenosine. A 6'-fluorohomovinyladenosine analogue (EDDFHA) undergoes hydration of the 5',6' double bond (hydrolytic activity) at a more rapid rate than oxidation at C3'. Three 4',5'-didehydro-5'-deoxy-5'-fluoro nucleoside analogues were prepared from 3'-deoxy- and 3'-(chloro and fluoro)-3'-deoxyadenosine via generation of the vinyl fluorides by thermolysis of 5'-fluoro-5'-thioether sulfoxides. The 3'-deoxy analogues of 6'-halohomovinyladenosines were prepared by Wittig extension with a 3'-deoxy-5'-carboxaldehyde and halodestannylation of vinyl stannanes. The 3'-hydroxyl group appears to be essential for binding to AdoHcy hydrolase. No hydrolytic activity at C5' or C6' was observed with the nonoxidizable 3'-deoxy or 3'-(chloro or fluoro) analogues in contrast with their 3'-hydroxy counterparts (ZDDFA and EDDFHA). These 3'-modified analogues cannot reduce enzyme-bound NAD(+) to NADH and do not produce time-dependent inhibition of AdoHcy hydrolase, but are weak competitive inhibitors (K-i = 150-200 mu M).