نتایج جستجو برای: thioamides

تعداد نتایج: 235  

Journal: :Chemical communications 2015
Robert W Newberry Brett VanVeller Ronald T Raines

To probe noncovalent interactions within the collagen triple helix, backbone amides were replaced with a thioamide isostere. This subtle substitution is the first in the collagen backbone that does not compromise thermostability. A triple helix with a thioamide as a hydrogen bond donor was found to be more stable than triple helices assembled from isomeric thiopeptides.

Journal: :Chemical communications 2012
Kazuya Yamaguchi Kazuhisa Yajima Noritaka Mizuno

In the presence of manganese oxides, dehydrosulfurization of various kinds of primary thioamides including aromatic, heterocyclic, and aliphatic ones efficiently proceeded to give the corresponding nitriles in high yields. The observed catalysis was truly heterogeneous, and manganese oxides could be reused.

Journal: :Organic & biomolecular chemistry 2014
Yadong Sun Huanfeng Jiang Wanqing Wu Wei Zeng Jianxiao Li

We herein describe a novel method for the synthesis of thioamides by a three component condensation of alkynyl bromides, amines, and Na2S·9H2O. The developed method is applicable for a wide range of amines and alkynyl bromides bearing different functional groups furnishing the corresponding products in moderate to excellent yields.

Journal: :Organic & biomolecular chemistry 2011
Katharina M Weiss Shengwei Wei Svetlana B Tsogoeva

A facile one-pot two-step process for the synthesis of 1,3-thiazole heterocycles via organocatalytic epoxidation of nitro-olefins with the t-BuOOH/DBU system, and subsequent reaction of α-nitro-epoxides with thioamides under mild conditions has been developed.

Journal: :Chemical communications 2012
Jacob M Goldberg Rebecca F Wissner Alyssa M Klein E James Petersson

Thioamides quench tryptophan and tyrosine fluorescence in a distance-dependent manner and thus can be used to monitor the binding of thioamide-containing peptides to proteins. Since thioamide analogs of the natural amino acids can be synthetically incorporated into peptides, they can function as minimally-perturbing probes of protein/peptide interactions.

Journal: :Chemical communications 2006
Mitsuo Komatsu Yukihiro Kasano Jin-ichi Yonemori Yoji Oderaotoshi Satoshi Minakata

Generation and cycloaddition of less- or non-stabilized azomethine ylides, or nitrile ylide equivalents, via unprecedented 1,4-stannatropy of N-(tributylstannylmethyl)thioamides were achieved. The reactions with dipolarophiles, such as electron-deficient alkenes and alkynes, afforded corresponding pyrrolidine and pyrrole derivatives effectively.

Journal: :Molecules 2010
Mykhaylo V Vovk Oleksandr M Pinchuk Andrij O Tolmachov Andrei A Gakh

The title compounds, (4-trifluoromethoxyphenyl)-2,5-dimethyl-3-(2-R-thiazol-4-yl)-1H-pyrroles, were prepared in four steps starting from commercially available 4-trifluoromethoxyaniline. The pyrrole (second ring) was added in one step using the Paal-Knorr method. The thiazole (third ring) was added in three steps using chloroacylation with chloroacetonitrile followed by heterocyclization with t...

Journal: :Dalton transactions 2013
Francesco Isaia M Carla Aragoni Massimiliano Arca Claudia Caltagirone Francesco Demartin Alessandra Garau Vito Lippolis

Elemental gold powder is easily oxidised under mild reaction conditions with 1 : 1 I(2)-adducts of the thioamides 3-methyl-benzothiazole-2-thione (mbtt) and 1-methyl-1H-benzimidazole-2(3H)-thione (mbit) with separation of the ionic complexes [Au(I)(mbtt)(2)]I(3) (1) and [(mtbiH)(2)](AuI(4))I(3) (2) [mtbiH = the imido protonated form of 2-(methylthio)benzimidazole] (gold oxidation yield >78% and...

Journal: :Applied and environmental microbiology 2013
Masumi Izawa Takashi Kawasaki Yoichi Hayakawa

Thioviridamide is a unique peptide antibiotic containing five thioamide bonds from Streptomyces olivoviridis. Draft genome sequencing revealed a gene (the tvaA gene) encoding the thioviridamide precursor peptide. The thioviridamide biosynthesis gene cluster was identified by heterologous production of thioviridamide in Streptomyces lividans.

Journal: :Acta Chemica Scandinavica 1963

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