نتایج جستجو برای: heterocyclic

تعداد نتایج: 9423  

Journal: :Molecules 2012
Dan Yuan Han Vinh Huynh

N-heterocyclic carbenes (NHCs) can be easily modified by introducing functional groups at the nitrogen atoms, which leads to versatile coordination chemistry as well as diverse catalytic applications of the resulting complexes. This article summarizes our contributions to the field of NHCs bearing different types of sulfur functions, i.e., thioether, sulfoxide, thiophene, and thiolato. The expe...

Journal: :Chemical communications 2015
Anup Bhunia Shridhar Thorat Rajesh G Gonnade Akkattu T Biju

The synthesis of deoxy-Breslow intermediates in their oxidized form has been developed via the reaction of N-heterocyclic carbenes (NHCs) with chalcones. Moreover, the initial tetrahedral adduct formed from the 1,4-addition of NHCs to chalcones is also isolated.

2009
Karnam J. R. Prasad

Heterocyclic compounds are very widely distributed in nature and are essential to life as they play a vital role in the metabolism of living cells. There are a vast number of pharmacologically active heterocyclic compounds of which many are in regular therapeutic usage. Among various heterocyclic compounds, quinoline-based drugs such as quinine, chloroquine, pamaquine and quinacrine are well kn...

Journal: :Journal of food science 2015
Wageh S Darwish Shouta M M Nakayama Yuumi Itotani Marumi Ohno Yoshinori Ikenaka Mayumi Ishizuka

UNLABELLED Heterocyclic amines get entry into human body mainly through ingestion of pan-fried meats cooked at high temperatures. Exposure of the gastrointestinal tract (GIT) to ingested xenobiotics prior to delivery to the liver may lead to metabolic activation, which may explain the high incidence of GIT carcinogenesis. Therefore, this study investigated the mutagenic activation of 2 heterocy...

 Caffeic acid phenethyl ester(CAPE) suppresses the growth of transformed cells such as human breast cancer cells, hepatocarcinoma , myeloid leukemia, colorectal cancer cells, fibrosarcoma, glioma and melanoma. A group of heterocyclic esters of caffeic acid was synthesized using Mitsunobu reaction and the esters were subjected to further structural modification by electrooxidation of the catecho...

The synthesis of 6- methyl- 2- phenyl- 7H- oxazolo [3,2-b] 1,2,4-Triazine- 7-one (6, R=Ph) and its 2-P- bromophenyl analogue to the two members of a new heterocyclic system is described

Journal: :Applied sciences 2023

The academic community has extensively explored, over the years, heterocyclic compounds of carbazolic motif [...]

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