• 제목/요약/키워드: ketone

검색결과 656건 처리시간 0.028초

Study on Synthesis of PAEKs Containing Triazole Units through Click Reaction and Their Properties

  • Wang, Lian-Jun;Li, Jie;Wang, Le-Yong
    • Bulletin of the Korean Chemical Society
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    • 제32권9호
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    • pp.3306-3310
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    • 2011
  • A series of novel linear aromatic ether ketone polymers containing triazole units were synthesized by click chemistry and their structures and properties were characterized by FT-IR, $^1H$ NMR, GPC, TGA, DSC and WAXD. The results showed that these polymers exhibited relatively small molecular weights distributions, good thermal stability and solvent-repelling which could have potential applications as engineering thermoplastic.

Studies on Triterpenoid Corticomimetics (V) - Oxidation of Presenegenin with Chromium Trioxide-Acetic Acid to Yield 11-Keto and 12-Keto Derivatives

  • Han, Byung-Hoon;Han, Yong-Nam
    • Archives of Pharmacal Research
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    • 제8권4호
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    • pp.229-236
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    • 1985
  • Oxidation of presenegenin dimethyl ester triacetate with chromium trioxide in acetic acid yielded two compounds, 11-ketone (IV) and 12-ketone (IV) derivatives. The latter was a main product. On mild alkaline hydrolysis, IV afforded 11-keto-presenegenin dimethyl ester (V), mp 232-$234^{\circ}$, $C_{32}H_{48}O_{8}$, whereas VI did 12-keto-presenegenin dimethyl ester 12, 27-hemiketal (VIII), mp 240-$242^{\circ}$, $C_{32}H_{50}O_{8}$.

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Acetoacetyl-CoA Synthetase, a Novel Cytosolic Ketone Body-Utilizing Enzyme that Specifically Activates Acetoacetate to its Coenzyme A Ester

  • Fukui, Tetsuya
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-1
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    • pp.70-70
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    • 2003
  • In mammalians, ketone bodies (acetoacetate, D(-)-3-hydroxybutyrate and acetone) are generated mainly in the liver via the 3-hydroxy-3-methylglutaryl-CoA pathway, carried to and utilized in extrahepatic tissues as an energy source during starvation and diabetes in particular due to their overproduction as the consequence of elevated fatty acid oxidation and lowered glucose metabolism. (omitted)

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