Wyniki wyszukiwania - Biblioteka Nauki

1

Synthesis of New Type of Macrocyclic Lactones Functionalized with Different Groups and Investigation of Their Metal Binding Abilities

100%

Ertul S. , Bayrakci M.

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2009

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tom Vol. 83, nr 3

493-502

EN

New type of macrocyclic lactones functionalized with different groups were synthesized by reaction of the dihydroxy compounds such as 5a-d with suitable glycolyl chloride such as tri, tetra dicarboxylic acid dichloride derivatives. Their metal complexes with NaClO4źH2O, KClO4 and Ba(ClO4)2źH2O were studied. Furthermore, their metal-pic rate extraction studies with metal salts such as Na+, K+, Cu2+, Ni2+ and Hg2+ from aqueous phase to organic phase were attempted. All the structures of the ligands and complexes were confirmed by 1H-, 13C-NMR, IR, UV-Vis, MS and elemental analyses methods.

2

Synteza i ocena zapachowa hydroksylaktonów z układem metylocykloheksanu

63%

Grabarczyk M. , Wińska K. , Mączka W. , Anioł M.

Przemysł Chemiczny

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2014

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tom T. 93, nr 6

1051-1054

PL

Przedstawiono siedmioetapową syntezę dwóch hydroksylaktonów z układem metylocykloheksanu. Jako substrat wyjściowy wykorzystano 4-metylo-1,3-cykloheksanodion. Podczas syntez otrzymano nowe etoksyketony, epoksyestry i hydroksylaktony z układem 4- i 6-metylocykloheksanu. Zarówno laktony, jak i wszystkie produkty pośrednie zostały poddane ocenie zapachowej. Okazało się, że niektóre z otrzymanych związków charakteryzują się bardzo ciekawymi aromatami, dzięki czemu mogą znaleźć zastosowanie w przemyśle spożywczym lub kosmetycznym.

EN

4-Methyl-1,3-cyclohexanedione was synthesized in reaction of EtCOMe with CH2=CHCOOEt and used for 7-step synthesis of 2 isomers of 2-hydroxy-5(3)-methyl-oxybicyclo[4.3.0]nonan-8-one by subsequent esterification with EtOH, redn. with LiAlH44, condensation with AcOEt, epoxidn. with m-chlorobenzoic acid and lactone ring closure with HClO4. Both lactones and all intermediate products were identified by NMR spectroscopy and studied for their fragrance. Some of the compds. showed very interesting odours and can be used in food or cosmetic industries.

3

Biotransformation and odour characteristic of the lactonic beta-ionone derivatives

63%

Grabarczyk M. , Winska K. , Maczka W.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2019

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tom 22

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nr 4

4

Environmentally safe insect control: feeding deterrent activity of alkyl-substituted gamma- and delta-lactones to peach potato aphid [Myzus persicae [Sulz.]] and Colorado potato beetle [Leptinotarsa decemlineata Say]

63%

Gabrys B. , Szczepanik M. , Dancewicz K. , Szumny A. , Wawrzenczyk C.

Polish Journal of Environmental Studies

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2006

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tom 15

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nr 4

EN

The feeding deterrent activity of alkyl-substituted y- and S-lactones, including a group of lactones obtained from linalool against peach potato aphid (Myzus persicae [Sulz.]) and Colorado potato beetle (CPB) (Leptinotarsa decemlineata Say), was investigated. The deterrent activity was species-specific and developmental-stage-specific (CPB). The strongest antifeedants for L. decemlineata larvae and adults were linalool-derived unsaturated lactones (Z) 5-(1.5-Dimethyl-hex-4-enyldiene)-dihydro-furan-2-one and (E) 5-(1.5-Dimethyl-hex-4-enyldiene)-dihydro-furan-2-one, and for CPB larvae - saturated lactone with three alkyl substituents, the 4-Isobutyl-5-isopropyl-5-methyl-dihydro-furan-2-one. The settling of M. persicae on plants was strongly deterred by iodolactones: 5-(1-Iodo-ethyl)-4.4-dimethyl-dihydro-furan-2-one, 5- Iodo-4A6-trimethyl-tetrahydro-pyran-2-one, 5-Iodomethyl-4-isobutyl-5-isopropyl-dihydro-furan-2-one, and the saturated lactones: 4.4.6-Trimethyl-tetrahydro-pyran-2-one and 4-Isobutyl-5-isopropyl-5-methyl- dihydro-furan-2-one. None of the tested lactones deterred aphid probing, but the probes were significantly shorter as compared to the control. The reduction in probing time may decrease the ability to transmit virus diseases by aphids.

5

Feeding deterrent activity of lactones with di - and trimethylcyclohexane system against lesser mealworm, Alphitobius diaperinus Panzer and Colorado potato beetle, Leptinotarsa decemlineata Say

63%

Szczepanik M. , Grabarczyk M. , Szumny A. , Wawrzenczyk C.

Journal of Plant Protection Research

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2003

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tom 43

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nr 2

6

Perspektywy zastosowania biotechnologii w produkcji lotnych zwiazkow smakowo-zapachowych

51%

Pleszczynska M.

Żywność Nauka Technologia Jakość

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2001

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tom 08

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nr 1

14-24

PL

Praca prezentuje obecny stan badań nad mikrobiologiczną produkcją naturalnych związków smakowo-zapachowych, zwłaszcza laktonów, związków aromatycznych (waniliny i aldehydu benzoesowego) oraz terpenów. Szczególny nacisk położono na przedstawienie zalet, ograniczeń oraz perspektyw wykorzystania w tym celu procesów biotransformacji.

EN

This rewiev presents the current state of the art of microbiological production of natural flavours, particulary lactones, aromatic compounds (vanillin, benzaldehyde) and terpenes. Special emphasis is placed on advantages, disadvantages and prospects for application to this end biotransformation processes.

7

Applicability of distillation-extraction technique for isolation of volatile compounds from different cultures of microscopic fungi

51%

Gebarowska E. , Szumny A. , Pietr S. J.

Electronic Journal of Polish Agricultural Universities. Series Agronomy

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2014

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tom 17

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nr 3

8

Alkilo podstawione gamma- i delta-laktony jako deterenty pokarmowe w stosunku do mszyc

38%

Dancewicz K. , Gabrys B. , Halarewicz-Pacan A. , Obara R. , Wawrzenczyk C.

Progress in Plant Protection

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2006

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tom 46

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nr 1

305-311

9

Feeding deterrent activity of the Compositae plant extracts for the selected storage pests

38%

Nawrot J. , Bloszyk E. , Grabarczyk H. , Drozdz B.

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nr 1