28006-93-1Relevant academic research and scientific papers
New Drug Delivery System for Crossing the Blood Brain Barrier
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Page/Page column 36, (2008/06/13)
New ubiquinol analogs are disclosed, as well as methods of using these compounds to deliver drug moieties to the body.
Synthesis of 9a-Deoxymitomycin Congeners
Naruta, Yoshinori,Nagai, Naoshi,Maruyama, Kazuhiro
, p. 1143 - 1148 (2007/10/02)
The protected mitosane (23) is prepared in stereospecific manner.The key reactions included in the synthetic scheme are (i) Lewis acid-mediated Claisen-type rearrangement of the penta-2,4-dienyl aryl ether (10) to the penta-2,4-dienylphenol (11), (ii) the regioselective incorporation of the alkoxymethyl group at the 1-position of the pentadienyl side-chain in the protected pentadienylhydroquinone (12), and (iii) the stereospecific copper-catalysed double cyclization of the azido(penta-2,4-dienyl)quinone (15) to the 3H-pyrroloindole-5,8-dione (16) in one step.Subsequent stereospecific introduction of the aziridine ring furnishes the target compound (23).
Lewis Acid Mediated Claisen-Type Rearrangement of Aryl Dienyl Ethers
Maruyama, Kazuhiro,Nagai, Naoshi,Naruta, Yoshinori
, p. 5083 - 5092 (2007/10/02)
Rearrangement of aryl pentadienyl ethers in the presence of BF3*OEt2 affords pentadienyl phenols in good yields without formation of the corresponding rearranged products.The mechanism of this rearrangement was studied by deuterium labeling and cross-coupling reactions.The scope and limitations of the rearrangement are discussed.
