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    Wyświetlanie 1-2 z 2
    Tytuł:
    Naturalne i syntetyczne analogi strukturalne jononów
    Natural and synthetic structural analogs of ionones
    Autorzy:
    Grabarczyk, M.
    Wińska, K.
    Mączka, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/172354.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    pochodne jononów
    aktywność biologiczna
    biotransformacja
    ionone derivatives
    biological activity
    biotransformation
    Opis:
    Both plants and animals in the process of evolution gained the ability to produce compounds that affect their existence in the wild. These compounds may affect the organisms producing them, and may also be used by completely different individuals. Among huge number of molecules characterized by extremely essential features are, among others, ionones and their derivatives. Ionones are ketones composed of 13 carbon atoms. They are found in many essential oils being the products of degradation of carotenoids. Both they and their structural analogues can play various biological functions such as being deterrent to other individuals or, conversely, atractant. Compounds found in plants, containing like ionone carbon skeleton, and having in their structure additional hydroxyl groups or epoxide ring (4)–(23) often exhibit allelopathic activity [1–15] (Fig. 2–5). Marine animals may in turn use them as ichtyotoxic compounds (27) and (28) [19] (Fig. 7). A compound called luciferin Latia (29) is responsible for the bioluminescent properties of marine snail [20] (Fig. 8). Plants used for centuries in traditional folk medicine of different countries are a source of glycoside derived α- and β-ionone (37)–(55) [22–31] (Fig. 11–14). These compounds may also be used in modern medicine, inter alia, in the regulation of neurodegenerative diseases or for the treatment of osteoporosis. Because of the potential biological properties of structural analogs of ionones they are also obtained by chemical synthesis (56)–(69) [32–39] (Fig. 15–18) or biotransformation (70)–(89) [40–47] (Fig. 19–25), and then subjected to careful examination of their biological activities. By applying these methods we can also obtain a molecules whose acquisition from natural sources is unprofitable. We have received such derivatives which have no counterpart in nature.
    Źródło:
    Wiadomości Chemiczne; 2015, 69, 11-12; 997-1018
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Naturalne hydroksy- i chlorolaktony terpenoidowe : ich występowanie i właściwości
    Natural terpenoid hydroxyand chlorolactones : their occurrence and properties
    Autorzy:
    Grabarczyk, M.
    Wińska, K.
    Mączka, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/172249.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Chemiczne
    Tematy:
    hydroksylaktony
    chlorolaktony
    aktywność biologiczna
    hydroxylactones
    chlorolactones
    biological activity
    Opis:
    The world around us is composed of a variety of organic compounds that form the animal and plant species. One of the larger groups amongst them are terpenoid compounds, either the structurally simplest monoterpenoids, or sesquiterpenoids containing several atoms or even di- and triterpenoids composed of several carbon atoms. Many of these compounds contain lactone moiety in their structure [1–27]. Equally often, a component of their structure is a hydroxyl group [1–23]. Sometimes, the structural element can also be a halogen atom [24–27]. Many of the hydroxylactones exhibit interesting biological properties, such as antimicrobial (Fig. 1, 2, 12, 13), [2, 3, 19, 21], cytotoxic (Fig. 4, 6, 8), [8, 12, 14], anti-inflammatory (Fig. 1, 4, 11, 14), [3, 9, 18, 22], anti-fungal (112 Fig. 13), [19, 21] or liver protection (Fig. 4, 9) [8, 15]. Some of these compounds also exist as flavoring or taste agents in food (Fig. 3, 10), [7, 16], inhibitors of overproduction nitrogen sulfide (5, 6, 11), [10, 12, 18] or pesticides (Fig. 2, 13), [6, 20]. Hydroxylactones are usually isolated from plants, in many cases, those that are used in traditional folk medicine (Fig. 1, 4, 6, 7, 9, 11, 14, 15, 17), [1, 3, 8, 9, 12, 13, 15, 18, 22, 23, 25, 26], and sometimes from the other organisms, such as microorganisms or fungi (Fig. 2, 5), [6, 10]. Lactones that contain a chlorine atom in their structure, in addition to or instead of the hydroxy group usually have cytotoxic properties (16, 17), [15, 25, 27]. They are found in both land- -based plants, mainly belonging to the family Asteraceae (Fig. 17) [25–27] as well as in marine organisms (Fig. 16), [24], in which the presence of chlorine atoms can be a result of the presence of salt (chloride) in seawater. The following article presents an overview of the various sources from which hydroxylactones and chlorolactones were isolated and also biological properties of these compounds.
    Źródło:
    Wiadomości Chemiczne; 2014, 68, 1-2; 117-131
    0043-5104
    2300-0295
    Pojawia się w:
    Wiadomości Chemiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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