755027-18-0Relevant articles and documents
Using Nature's polyenes as templates: studies of synthetic xanthomonadin analogues and realising their potential as antioxidants
Madden, Katrina S.,Jokhoo, Hans R. E.,Conradi, Fabian D.,Knowles, Jonathan P.,Mullineaux, Conrad W.,Whiting, Andrew
supporting information, p. 3752 - 3759 (2019/04/17)
Two truncated analogues of the polyenyl photoprotective xanthomonadin pigments have been synthesised utilising an iterative Heck-Mizoroki (HM)/iododeboronation cross coupling approach and investigated as models of the natural product photoprotective agent
Active Molybdenum-Based Anode for Dehydrogenative Coupling Reactions
Beil, Sebastian B.,Müller, Timo,Sillart, Sydney B.,Franzmann, Peter,Bomm, Alexander,Holtkamp, Michael,Karst, Uwe,Schade, Wolfgang,Waldvogel, Siegfried R.
supporting information, p. 2450 - 2454 (2018/02/09)
A new and powerful active anode system that can be operated in 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) has been discovered. In HFIP the molybdenum anode forms a compact, conductive, and electroactive layer of higher-valent molybdenum species. This system can replace powerful but stoichiometrically required MoV reagents for the dehydrogenative coupling of aryls. This electrolytic reaction is more sustainable and allows the conversion of a broad scope of activated arenes.
Transition-metal-free decarboxylative bromination of aromatic carboxylic acids
Quibell, Jacob M.,Perry, Gregory J. P.,Cannas, Diego M.,Larrosa, Igor
, p. 3860 - 3865 (2018/04/26)
Methods for the conversion of aliphatic acids to alkyl halides have progressed significantly over the past century, however, the analogous decarboxylative bromination of aromatic acids has remained a longstanding challenge. The development of efficient methods for the synthesis of aryl bromides is of great importance as they are versatile reagents in synthesis and are present in many functional molecules. Herein we report a transition metal-free decarboxylative bromination of aromatic acids. The reaction is applicable to many electron-rich aromatic and heteroaromatic acids which have previously proved poor substrates for Hunsdiecker-type reactions. In addition, our preliminary mechanistic study suggests that radical intermediates are not involved in this reaction, which is in contrast to classical Hunsdiecker-type reactivity. Overall, the process demonstrates a useful method for producing valuable reagents from inexpensive and abundant starting materials.
Approaches to Styrenyl Building Blocks for the Synthesis of Polyene Xanthomonadin and its Analogues
Madden, Katrina S.,Laroche, Benjamin,David, Sylvain,Batsanov, Andrei S.,Thompson, Daniel,Knowles, Jonathan P.,Whiting, Andrew
, p. 5312 - 5322 (2018/10/15)
A number of aryl building blocks for the synthesis of two xanthomonadin natural product pigments, as well as a related analogue, were accessed using a divergent hydroboration/bromoboration approach from a key alkynyl intermediate. A new approach towards s
Progress Toward a Semi-Synthetic Organism with an Unrestricted Expanded Genetic Alphabet
Dien, Vivian T.,Holcomb, Matthew,Feldman, Aaron W.,Fischer, Emil C.,Dwyer, Tammy J.,Romesberg, Floyd E.
supporting information, p. 16115 - 16123 (2018/11/23)
We have developed a family of unnatural base pairs (UBPs), exemplified by the pair formed between dNaM and dTPT3, for which pairing is mediated not by complementary hydrogen bonding but by hydrophobic and packing forces. These UBPs enabled the creation of
Macrocyclic Compounds As Antiviral Agents
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, (2010/08/07)
A class of macrocyclic compounds of formula (I), wherein R1, R3, R4, Ra, Rb, A, Z, Y, X, M, W, n and m are defined herein, that are useful as inhibitors of viral proteases, particularly the hepatitis C virus (HCV) NS3 protease, are provided. Also provided are processes 5 for the synthesis and use of such macrocyclic compounds for treating or preventing HCV infection. Formula (I):
HCV NS3 PROTEASE INHIBITORS
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Page/Page column 50, (2008/12/05)
The present invention relates to macrocyclic compounds of formula (I) that are useful as inhibitors of the hepatitis C virus (HCV) NS3 protease, their synthesis, and their use for treating or preventing HCV infections.
SULFONAMIDE DERIVATIVE HAVING PGD2 RECEPTOR ANTAGONISTIC ACTIVITY
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Page/Page column 127-128, (2010/11/26)
A sulfonamide derivative having DP receptor antagonistic activity; and a medicinal composition and a therapeutic agent for allergic diseases which each contains the compound as an active ingredient. The derivative is a compound represented by the general formula (II): (II) (wherein ring A is an aromatic carbocycle, etc.; ring B is a nitrogenous nonaromatic heterocycle, etc.; ring C is an aromatic carbocycle, etc.; R1 is carboxy, etc.; R2's each independently is halogeno, etc.; R3 is optionally substituted alkyloxy, etc.; R4's each independently is halogeno, etc.; R5's each independently is optionally substituted alkyl, etc.; M is sulfonyl, etc.; Y is a single bond, etc.; L1 is a single bond, etc.; L2 is a single bond, etc.; k is 0, 1, 2, 3, or 4; n is 0, 1, or 2; and q is 0, 1, 2, or 3, provided that, for example, a) when ring B is a 6-membered nitrogenous heterocycle containing one or two nitrogen atoms and ring C is a benzene ring, then k is not 0), a pharmaceutically acceptable salt of the compound, or a hydrate of either.
Halogen-lithium exchange between substituted dihalobenzenes and butyllithium: Application to the regioselective synthesis of functionalized bromobenzaldehydes
Da?browski, Marek,Kubicka, Joanna,Luliński, Sergiusz,Serwatowski, Janusz
, p. 6590 - 6595 (2007/10/03)
Halogen-lithium interconversion reactions between unsymmetrically substituted mono- and bifunctional dihalobenzenes C6H 3XHal2 and C6H2XYHal2 (Hal=Br, I; X, Y=F, OR, CF3, CH(OMe)2) and butyllithium were investigated. The resultant organolithium intermediates were converted into the corresponding benzaldehydes in moderate to good yields. As a rule, bromine atoms in the position ortho to the functional group were replaced preferentially with lithium. Intramolecular competition experiments with bifunctional systems revealed that fluorine is capable of activating the neighboring bromine atom more strongly than methoxy and dimethoxymethyl groups. On the replacement of the non-activated bromine with iodine a complete reversal of this reactivity pattern can be accomplished due to the preferred iodine-lithium exchange.
HETEROCYCLIC KINASE INHIBITORS
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Page 79, (2010/02/08)
Compounds having the formula (I) are useful for inhibiting protein kinases. Also disclosed are methods of making the compounds, compositions containing the compounds, and methods of treatment using the compounds.