5837-72-9Relevant academic research and scientific papers
Macrocyclisation of macrodiolide with dimethylaluminium methaneselenolate
Shen, Liu-Lan,Mun, Han-Seo,Jeong, Jin-Hyun
supporting information; experimental part, p. 6895 - 6899 (2011/02/24)
Dimethylaluminium methaneselenolate (Me2AlSeMe, 1) acts as an acyl transfer agent for esterification. In cases of direct macrolactonisation (n = 10-12), this selenium-aluminium complex preferentially creates symmetric macrodiolides rather than macrolides. The factors determining macrodilactonisation were investigated and applied toward the total synthesis of norpyrenophorin, which result in a macrodilactonisation yield of 64 %. Dimethylaluminium methaneselenolate (Me2AlSeMe, 1) acts as an acyl transferagent for esterification. In cases of direct macrolactonisation (n = 10-12), this selenium-aluminium complex preferentiallycreates symmetric macrodiolides rather than macrolides. The factors determining macrodilactonisation were investigated and applied toward the total synthesis of nor-pyrenophorine. Copyright
NOVEL IDO INHIBITORS AND METHODS OF USE THEREOF
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Page/Page column 24-28, (2008/12/07)
Novel indolearaine 2, 3-dioxygenase (IDO) inhibitors, compositions comprising the same, and methods of use thereof are disclosed.
Photochemical studies on ladderane formation from conjugated esters in solution or solid phase
Mascitti, Vincent,Corey
, p. 5879 - 5882 (2007/10/03)
This letter describes a combined photochemical and X-ray crystallographic study of routes for the synthesis of cyclobutane or ladderane structures by a [2+2]-cycloaddition pathway and leads to a clearer definition of the 3-D structural requirements for su
Chloroperoxidase-catalyzed oxidation of conjugated dienoic esters
Bougioukou, Despina J,Smonou, Ioulia
, p. 339 - 342 (2007/10/03)
The chloroperoxidase (CPO)-catalyzed oxidations of dienes conjugated to an ester group were studied using tert-butyl hydroperoxide as the terminal oxidant.
A new method for synthesis of allenes, including an optically active form, from aldehydes and alkenyl aryl sulfoxides by sulfoxide-metal exchange as the key reaction and an application to a total synthesis of male bean weevil sex attractant
Satoh, Tsuyoshi,Hanaki, Noriko,Kuramochi, Yuko,Inoue, Yujiro,Hosoya, Kayo,Sakai, Ken
, p. 2533 - 2549 (2007/10/03)
The sulfoxide-metal exchange reaction of β-acetoxy sulfoxides or β-mesyloxy sulfoxides, which were derived from alkenyl aryl sulfoxides and aldehydes in two steps, with a Grignard reagent or alkyllithium at low temperature gave allenes in good yields. Optically active allenes were synthesized starting from optically active 2-substituted ethenyl p-tolyl sulfoxides. A synthesis of (-)-methyl (E)-2,4,5-tetradecatrienoate, a male bean weevil sex attractant, was realized by this method.
Stereoselective synthesis of methyl and ethyl (2E,4Z)-2,4-decadienoates from (E)-4,4-dimethoxy-2-butenal
Ovanesyan,Garibyan,Badanyan
, p. 951 - 954 (2007/10/03)
Methyl and ethyl (2E,4Z)-2,4-decadienoates were synthesized starting from (E)-4,4-dimethoxy-2-butenal.
Synthesis of the methyl ester of tritium-labeled AK-toxin I, a host-specific toxin produced by Alternaria alternata Japanese pear pathotype
Okada, Masakazu,Miyagawa, Hisashi,Ueno, Tamio
, p. 1253 - 1260 (2007/10/03)
AK-toxin I, a host-specific toxin to Japanese pear (Pyrus serotina), was synthesized as its methyl ester from three precursor fragments: conjugated diene-carboxylic acid, chiral epoxyalcohol and β-methylphenylalanine. The epoxyalcohol fragment was derived from D-fructose, in which effective homologation of the hemiacetal carbon to alkyne by using dimethyl 1-diazo-2-oxopropylphosphonate was the key reaction. The diene-carboxylic acid fragment was prepared by repeated Wittig reactions, and was combined with the epoxyalcohol fragment by the Stille reaction. Esterification of the combined product with the stereochemically-pure β-methylphenylalanine fragment afforded the target compound. This method was used to prepare the methyl ester of tritium-labeled AK-toxin I with a specific radioactivity of 213 GBq/mmol.
Methyl (2E,4Z,6Z)-deca-2,4,6-trienoate, a thermally unstable, sex-specific compound from the stink bug Thyanta pallidovirens
Millar, Jocelyn G.
, p. 7971 - 7972 (2007/10/03)
Sexually mature male stink bugs, Thyanta pallidovirens, release a male-specific blend of volatiles, including several sesquiterpene hydrocarbons, and the highly conjugated ester methyl (2E,4Z,6Z)-deca-2,4,6-trienoate 1. The latter compound was synthesized, and found to rearrange under GC conditions via a 1,7 sigmatropic rearrangement.
