- Selective conversion of enol ethers into alcohols in the presence of alkenes using Hg(OAc)2-NaBH4
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Alkyl enol ethers derived from aldehydes undergo selective oxymercuration-demercuration with aqueous Hg(OAc)2-NaBH4 in the presence of an alkene in good to excellent yield. This method allows the survival of mono-, trans and cis di-, and tri-substituted alkenes as well as cyclic alkenes.
- Crouch, R. David,Mehlmann, John F.,Herb, Brian R.,Mitten, Jeffrey V.,Dai, H. George
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p. 559 - 561
(2007/10/03)
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- Synthesis of (Z)-6-heneicosen-11-one, (+/-)(Z)-14-methyl-8-hexadecen-1-ol and (+/-)-5,6-dehydrosenedigitalene
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Three naturally occurring compounds (Z)-6-heneicosen-11-one (1), (+/-)-(Z)-14-methyl-8-hexadecen-1-ol (2) and (+/-)-5,6-dehydrosenedigitalene (3) have been synthesised using lithium tetrachlorocuperate catalysed coupling reaction.
- Sharma, M. L.,Verma, Sadhana,Chand, Tek
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p. 1030 - 1034
(2007/10/03)
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- INSECT PHEROMONES AND THEIR ANALOGUES XXXI. SYNTHESIS OF DEC-5Z-EN-1-YL ACETATE AND HENEICOS-6Z-EN-11-ONE FROM A FUNCTIONALLY DIFFERENTIATED PRODUCT OF THE OZONOLYSIS OF CYCLOPENTENE
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Dec-5Z-en-1-yl acetate and heneicos-6Z-en-11-one - pheromones of insects of the genera Agrotis and Orgyia, respectively - have been synthesized from a product of the functionally differentiated ozonolysis of cyclopentene.
- Odinokov, V. N.,Akhmetova, V. R.,Khasanov, Kh. D.,Abduvakhabov, A. A.,Tolstikov, O. A.
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p. 497 - 499
(2007/10/02)
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- Leukotriene antagonists
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Compounds having the formula: STR1 are antagonists of leukotrienes of C4, D4 and E4, the slow reacting substance of anaphylaxis. These compounds are useful as anti-asthmatic, anti-allergic, anti-inflammatory agents, and cytoprotective agents.
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- Enamine synthesis using the Horner-Wittig reaction. Part 2. New acyl anion equivalents derived from (aminomethyl)diphenylphosphine oxides
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Using the Horner-Wittig reagents (1-morpholino-alkyl)diphenylphosphine oxides (1), aromatic as well as aliphatic α,β-unsaturated aldehydes can be converted into the morpholino enamines of their respective homologous phenyl, ethyl and styryl ketones.These enamines can be easily converted into the corresponding ketones by mild, acid-catalyzed hydrolysis.The usefulness of these phosphine oxides as acyl anion equivalents is further demonstrated by the synthesis of dihydrojasmone and of (Z)-6-henicosen-11-one.
- Broekhof, N. L. J. M.,Elburg, P. van,Hoff, D. J.,Gen, A. van der
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p. 317 - 321
(2007/10/02)
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- Unsaturated eicosanoic acids
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Unsaturated eicosanoic acids and derivatives thereof which inhibit the synthesis of SRS-A are useful for treating and preventing asthma and allergic responses caused by SRS-A as well as useful in inhibiting inflammation.
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