- Multi-gram preparation of cinnamoyl tryptamines as skin whitening agents through a chemo-enzymatic flow process
-
A 2-step flow-based chemo-enzymatic synthesis of selected cinnamoyl tryptamines as potential cosmetic ingredients has been developed. A first reaction catalyzed by immobilized Pd(OAc)2 gave the acyl donors employed as starting material in the s
- Padrosa, David Roura,Contente, Martina L.
-
-
- A Hydroperoxide-Mediated Decarboxylation of α-Ketoacids Enables the Chemoselective Acylation of Amines
-
Strategies for the formation of amide bonds, that is, one of the most basic and important transformations in organic synthesis, have so far focused predominantly on dehydration reactions. Herein, we report and demonstrate the practical utility of a novel decarboxylative amidation of α-ketoacids by using inexpensive tert-butyl hydroperoxide (TBHP), which is characterized by high yields, a broad substrate scope, mild reaction conditions, and a unique chemoselectivity. These features enable the synthesis of peptides from amino acid derived α-ketoacids under preservation of the stereochemical information.
- Nanjo, Takeshi,Kato, Natsuki,Zhang, Xuan,Takemoto, Yoshiji
-
supporting information
p. 15504 - 15507
(2019/11/14)
-
- METHOD FOR SYNTHESISING AMIDES
-
The present invention relates to a method for synthesising amides that is of general applicability. The method may be performed in vitro or in vivo. Cell lines for use in the in vivo methods also form aspects of the invention. The method for synthesising a non-natural amide comprises: a. reaction of a carboxylic acid with a naturally occurring CoA ligase or a variant thereof; and b. reaction of the product of step a with an amine in the presence of a naturally occurring acyltransferase or a variant thereof; with the proviso that where the CoA ligase and acyltransferase are both naturally occurring, they are not derived from the same source species and do not act sequentially in a metabolic pathway; and with the proviso that the non-natural product is not N-(E)-p-coumaroyl-3-hydroxyanthranilic acid or N-(E)-p-caffeoyl-3-hydroxyanthranilic acid. Further, a method for producing an active pharmaceutical ingredient by the aforementioned method and host cells for carrying out said methods are envisaged.
- -
-
Page/Page column 32-34
(2018/03/06)
-
- Ruthenium-catalysed oxidation of alcohols to amides using a hydrogen acceptor
-
A wider investigation into the synthesis of secondary amides from primary alcohols using a hydrogen acceptor using commercially available [Ru(p-cymene)Cl2]2 with bis(diphenylphosphino)butane (dppb) as the catalyst. The report looks at over 50 examples with varying functionality and steric bulk, whilst also covering the first reported results using microwave heating to effect the transformation.
- Watson, Andrew J.A.,Wakeham, Russell J.,Maxwell, Aoife C.,Williams, Jonathan M.J.
-
supporting information
p. 3683 - 3690
(2014/05/20)
-
- Catalytic amide formation with α′-hydroxyenones as acylating reagents
-
α′-Hydroxyenones undergo clean, catalytic amidations with amines promoted by the combination of an N-heterocyclic carbene and 1,2,4-triazole. The Royal Society of Chemistry 2009.
- Chiang, Pei-Chen,Kim, Yoonjoo,Bode, Jeffrey W.
-
supporting information; experimental part
p. 4566 - 4568
(2010/01/06)
-
- Synthesis of indoleamine 2,3-dioxygenase inhibitory analogues of the sponge alkaloid exiguamine A
-
Synthetic analogues of the sponge natural product exiguamine A (3) have been prepared and evaluated for their ability to inhibit indoleamine 2,3-dioxygenase in vitro.
- Carr, Gavin,Chung, Marco K. W.,Mauk, A. Grant,Andersen, Raymond J.
-
p. 2634 - 2637
(2008/12/22)
-
- SUBSTITUTED QUINONE INDOLEAMINE 2,3-DIOXYGENASE (IDO) INHIBITORS AND SYNTHESES AND USES THEREFOR
-
The present invention relates to substituted mdoloqumone compounds of the general formula (A) and (B) and pharmaceutical compositions thereof that are inhibitors of mdoleamme-2,3-dioxygenase (IDO) More specifically, the invention relates to said compounds
- -
-
Page/Page column 66-67
(2008/12/05)
-
- Characterization of the binding properties of SIRT2 inhibitors with a N-(3-phenylpropenoyl)-glycine tryptamide backbone
-
SIRT2 inhibitors with a N-(3-phenylpropenoyl)-glycine tryptamide backbone were studied. This backbone has been developed in our group, and it is derived from a compound originally found by virtual screening. In addition, compounds with a smaller 3-phenylpropenoic acid tryptamide backbone were also included in the study. Binding modes for the new compounds and the previously reported compounds were analyzed with molecular modelling methods. The approach, which included a combination of molecular dynamics, molecular docking and cluster analysis, showed that certain docking poses were favourable despite the conformational variation in the target protein. The N-(3-phenylpropenoyl)-glycine tryptamide backbone is also a good backbone for SIRT2 inhibitors, and the series of compounds includes several potent SIRT2 inhibitors.
- Kiviranta, Paeivi H.,Salo, Heikki S.,Leppaenen, Jukka,Rinne, Valtteri M.,Kyrylenko, Sergiy,Kuusisto, Erkki,Suuronen, Tiina,Salminen, Antero,Poso, Antti,Lahtela-Kakkonen, Maija,Wallen, Erik A.A.
-
p. 8054 - 8062
(2008/12/23)
-