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Wyszukujesz frazę "2-amino-1H-benzimidazole" wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Wybrane Metody syntezy 2-amino-1H-benzimidazolu
Selected Methods of the Synthesis of 2-amino-1H-benzimidazole
Autorzy:
Nawrocka, W. P.
Nowicka, A.
Powiązania:
https://bibliotekanauki.pl/articles/172251.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
2-amino-1H-benzimidazol
alkilo i arylo pochodne
syntezy
2-amino-1H-benzimidazole
alkyl and aryl derivatives
synthesis
Opis:
2-Amino-1H-benzimidazoles have attracted much attention due to their varied biological activities toward numerous diseases. 2-Amino-1H-benzimidazole core structures can be found in commercial drugs such as astemizole, mizolastine or carbendazime [1, 2]. 2-(N-substituted)-aminobenzimidazoles are widely used chemical substances in medicinal chemistry. Several compounds from this class have been used as anticancer, antihistamine and antiviral agents [3–5]. An efficient practical method for the synthesis of a diverse collection of 2-aminobenzimidazoles would be of great value for drug discovery. Several synthetic methods have been reported in the literature for the synthesis of 2-aminobenzimidazoles [11]. The synthesis of 2-aminobenzimidazole may be carried out in several ways. The most popular and economical method involves the treatment of various 2-substituted anilines with different cyclising agents to yield 2-aminobenzimidazoles. The cyclocondensation of an appropriate o-phenylenediamine with cyanogen bromide affords high yields of 2-aminobenzimidazoles [12]. Hydrogenation of o-cyanaminonitrobenzene over Raney nickel catalyst gives 2-aminobenzimidazole [34, 35]. Substituted 2-aminobenimidazoles have also been prepared by oxidation of the corresponding substituted thioureas with isothiocyanates using desulfurizing agents such as mercury-(II) oxide or methyl iodide [18–21].
Źródło:
Wiadomości Chemiczne; 2013, 67, 7-8; 715-732
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Syntezy wybranych leków pochodnych 2-amino-1H-benzimidazolu
Synthesis of Selected drugs 2-amino-1H-benzimidazole derivatives
Autorzy:
Nowicka, A.
Nawrocka, W. P.
Powiązania:
https://bibliotekanauki.pl/articles/172049.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
synteza leków
leki przeciwrobacze
leki przeciwhistaminowe
leki przeciwwirusowe
leki przeciwnowotworowe
Opis:
2-Amino-1H-benzimidazole fragment occurs in broad spectrum of drugs with anticancer, antiviral, antifungal, anthelmintic and antihistamine properties. There are 30 drugs, 2-amino-1H-benzimidazole derivatives, registered in the world. Mebendazole, Albendazole and another derivatives are antihelmintic drugs which are believed to work by selectively inhibiting the synthesis of microtubules in parasitic worms, and by destroying extant cytoplasmic microtubes in their intestinal [9, 12, 14]. Astemizole was a second-generation antihistamine drug that has a long duration of action. It has been withdrawn from the market in most countries because of rare but potentially fatal side effects [19]. Mizolastine is non-sedating antihistamine drug [21]. It blocks H1 receptors and doesn’t prevent the actual release of histamine from mast cells, but just prevents it binding to receptors. Enviroksim and its isomer Zinviroksim and Enviraden are antivirial drugs [26, 27]. They inhibit multiplication of 15 different serotypes of rhinovirus. Benomyl is a systemic fungicide that is selectively toxic to microorganisms [29]. Benomyl binds to microtubules, interfering with cell functions, such as meiosis and intracellular transportation. Carbendazim is a widely used, broad-spectrum fungicide and a metabolite of Benomyl [29]. It’s also shown an anticancer activity. Oncodazole shows antifungal, antineoplastic and antihelmintic activities, which exerts its effect in cells by binding to tubulin and interfering with the polymerization of microtubules [33].
Źródło:
Wiadomości Chemiczne; 2013, 67, 7-8; 695-714
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aktywność biologiczna pochodnych 2-amino -1H-benzimidazolu. Część I
Biological activity of 2-amino -1H-benzimidazole derivatives. Part I
Autorzy:
Nawrocka, W. P.
Nowicka, A.
Liszkiewicz, H.
Powiązania:
https://bibliotekanauki.pl/articles/171654.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
pochodne 2-aminobenzimidazolu
aktywność biologiczna
2-aminobenzimidazole derivatives
biological activity
Opis:
The main goal of this article is to present a various biological activity of 2-aminobenzimidazole derivatives. During the past 20 years the biological activity of 2-aminobenzimidazole have been studied. 2-Aminobenzimidazole occurs in a broad spectrum of drugs and pharmacological agents with anticancer [21], antibacterial [14], antiviral [10], analgesic or antiaggregatory properties. There are 30 drugs, 2-aminobenzimidazole derivatives, registered in the world. Mebendazole represents a big group of antiparasitic drugs [25]. Antihistaminic II-nd generation drug with selective activity towards H1 receptors represents Astemizol [2]. Antiviral drugs are: Enviroksym and its isomer Zinviroksym and Enviraden [3–5]. Synthesized 2-aminobenzimidazole derivatives are active against HCV [7], HIV [8, 9] or HCHV [11]. Selected compounds exhibit antiviral [3–5], antifungal [22–24] and antiparasitic [26–28] activity. Some of them can be used in the treatment of bacterial infections [12–14]. Many of 2-aminobenzimidazole analogues are histamine H1, H2, H3 and also H4 receptor antagonists [30, 33, 35, 39].
Źródło:
Wiadomości Chemiczne; 2012, 66, 9-10; 811-838
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Syntezy wybranych, nowych pochodnych 2-amino-1H-benzimidazolu i ich mechanizmy działania biologicznego
Synthesis of Selected, New 2-amino-1H-benzimidazole derivatives and Their mechanism of biological activity
Autorzy:
Nowicka, A.
Nawrocka, W. P.
Powiązania:
https://bibliotekanauki.pl/articles/172102.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
pochodne 2-amino-1H-benzimidazolu
syntezy
aktywność biologiczna
2-amino-1H-benzimidazole derivatives
synthesis
biological activity
Opis:
Many 2-amino-1H-benzimidazole drugs such as antihistaminic mizolastine and norastemizole or antiparasitic mebendazole, albendazole and thiabendazole have been used in clinic [1, 2]. Benomyl and its metabolite Carbendazim are both antifungal and anticancer drugs [4]. Recently, a lot of literature has revealed that 2-amino-1H-benzimidazole derivatives could effectively inhibit the growth of various microorganisms, what suggests that 2-aminobenzimidazole compounds should have large potential as a new type of antibacterial [15] and antifungal [18] agents. A number of 2-aminobenzimidazoles have exhibited antiproliferative in vitro properties [11]. Some new compounds, containing in theirs structures 2-aminobenzimidazole, show interesting and diverse cytotoxic mechanism of action, e.g. induce apoptosis of cancer cells [13]. Some of 2-aminobenzimidazole analogues are histamine and serotonin receptors antagonists [32]. 2-Aminobenzimidazoles derivatives have been frequently found to display a variety of biological activities like anti-inflammatory, antioxidant and anticoagulant [32] properties.
Źródło:
Wiadomości Chemiczne; 2013, 67, 3-4; 203-225
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
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