polyene

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/06/25 19:03:15」(JST)

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This article is about the class of chemical compounds. For polyenes in antifungal therapy, see Polyene antimycotic.

Amphotericin B is an example of a yellow-coloured polyene antifungal (antimycotic) agent. Note the alternating double and single bonds in the center.

Polyenes are poly-unsaturated organic compounds that contain one or more sequences of alternating double and single carbon–carbon bonds. These double carbon–carbon bonds interact in a process known as conjugation, which results in an overall lower energy state of the molecule.

Normally carbon–carbon double bonds which are not conjugated or only conjugated with only one or two other carbon–carbon double bonds have high enough energy that they absorb in the ultraviolet region of a spectrum, but the absorption energy state of polyenes with numerous conjugated double bonds can be lowered such that they enter the visible region of the spectrum, resulting in compounds which are coloured.

Many fatty acids are polyenes, and many dyes contain linear polyenes. Other examples of polyene compounds include beta-carotene, which is yellow to orange coloured depending on concentration, and polyene antimycotics, some of which are yellow coloured.

In organometallic chemistry polyenes are attached to metal complexes and can be altered through addition to pi ligands.

References

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• 1. アゾールの薬理学 pharmacology of azoles
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English Journal

• Composition and spectra of copper-carotenoid sediments from a pyrite mine stream in Spain.

• Garcia-Guinea J1, Furio M2, Sanchez-Moral S3, Jurado V4, Correcher V5, Saiz-Jimenez C6.
• Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.Spectrochim Acta A Mol Biomol Spectrosc.2015 Jan 25;135:203-10. doi: 10.1016/j.saa.2014.07.017. Epub 2014 Jul 10.
• Mine drainages of La Poderosa (El Campillo, Huelva, Spain), located in the Rio Tinto Basin (Iberian Pyrite Belt) generate carotenoid complexes mixed with copper sulfates presenting good natural models for the production of carotenoids from microorganisms. The environmental conditions of Rio Tinto Ba
• PMID 25064504

• Raman spectroscopy as a tool in differentiating conjugated polyenes from synthetic and natural sources.

• Fernandes RF1, Maia LF1, Couri MR1, Costa LA2, de Oliveira LF3.
• Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.Spectrochim Acta A Mol Biomol Spectrosc.2015 Jan 5;134:434-41. doi: 10.1016/j.saa.2014.06.022. Epub 2014 Jun 14.
• This work presents the Raman spectroscopic characterization of synthetic analogs of natural conjugated polyenals found in octocorals, focusing the unequivocal identification of the chemical species present in these systems. The synthetic material was produced by the autocondensation reaction of crot
• PMID 25033235

• The ability of retention, drug release and rheological properties of nanogel bioadhesives based on cellulose derivatives.

• Keshavarz M1, Kaffashi B.
• Pharmaceutical development and technology.Pharm Dev Technol.2014 Dec;19(8):952-9. doi: 10.3109/10837450.2013.846371. Epub 2013 Oct 25.
• The rheological and drug release behavior of biopolymer nanocomposite gels based on the cellulose derivatives, formulated as the bioadhesive drug delivery platforms, were investigated. The bioadhesive gel is composed of the microcrystalline cellulose, sodium carboxymethyl cellulose and phosphate buf
• PMID 24160773

Japanese Journal

• Characteristics and mechanism of low temperature dehydrochlorination of poly(vinyl chloride) in the presence of zinc(II) oxide

• Kosuda Takashi,Okada Tomohiko,Nozaka Shogo,Matsuzawa Yukitaka,Shimizu Takuya,Hamanaka Senji,Mishima Shozi
• POLYMER DEGRADATION AND STABILITY 97(4), 584-591, 2012-04
• … It was concluded that the first step of the dehydrochlorination is cross-linking C-C single bond formation in a polymer chain or among polymer chains followed by isomerization to polyene and aromatics. …
• NAID 80022396975

• Streptomyces nodosus Host Strains Optimized for Polyene Glycosylation Engineering

• STEPHENS Niamh,RAWLINGS Bernard,CAFFREY Patrick
• Bioscience, biotechnology, and biochemistry 76(2), 384-387, 2012-02-23
• The AmphDI glycosyltransferase transfers a mycosaminyl sugar residue from GDP onto 8-deoxyamphoteronolide B, the aglycone of the antifungal amphotericin B. In this study the <I>amphDI</I> …
• NAID 10030400259

• 3D Reproduction of a Snow Crystal by Stereolithography

• TAMAKI Jun'ichi,YANAGI Satoshi,AOKI Yuya,KUBO Akihiko,KAMEDA Takao,ULLAH A. M. M. Sharif
• Journal of Advanced Mechanical Design, Systems, and Manufacturing 6(6), 923-935, 2012
• … was required to complete the light-hardening reaction within 15 min when polyene/polythiol resin (NOA81) was used as the light-curing resin. …
• NAID 130002099524

Related Links

• ポリエン【polyene】の意味 - 国語辞書 - goo辞書

ポリエン【polyene】とは。意味や解説。分子内に多数の二重結合をもつ炭化水素。弾性ゴムなど。二重結合が共役しているものは共役ポリエンという。 - goo辞書は国語、英和、和英、中国語、百科事典等からまとめて探せる辞書検索 ...

• Polyene | Define Polyene at Dictionary.com

Polyene definition, a hydrocarbon containing two or more double bonds, often conjugated. See more. Thesaurus Translator Reference Word of the Day Blog Slideshows Apps by Dictionary My Account Log Out Log In Dictionary ...

• Polyene - Definition and More from the Free Merriam-Webster ...

Definition of POLYENE: an organic compound containing many double bonds; especially: one having the double bonds in a long aliphatic hydrocarbon chain — poly·enic \ ˌ pä-lē-ˈ ē-nik\ adjective Origin of POLYENE International ...

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