35588-82-0Relevant academic research and scientific papers
An approach to aminonaphthoquinone ansamycins using a modified Danishefsky diene
Kuttruff, Christian A.,Geiger, Simon,Cakmak, Mesut,Mayer, Peter,Trauner, Dirk
supporting information; experimental part, p. 1070 - 1073 (2012/04/04)
A robust and scalable synthesis of a novel, cyano-substituted Danishefsky-type diene and its use in the Diels-Alder reaction with various dienophiles is reported. The diene allows for the rapid construction of highly substituted aminonaphthoquinones that occur in numerous ansamycin antibiotics.
Stereoselective synthesis of pamamycin-607
Jeong, Eun Jeong,Kang, Eun Joo,Sung, Lee Taek,Hong, Sung Kil,Lee, Eun
, p. 14655 - 14662 (2007/10/03)
A macrodiolide antibiotic pamamycin-607 was synthesized by joining two hydroxy acid components. Three cis-2, 5-disubstituted tetrahydrofuran rings in the molecule were stereoselectively prepared by radical cyclization reactions of β-alkoxyvinyl ketone intermediates and a β-alkoxymethacrylate substrate. The key step of the synthesis is characterized by the predominant threo product formation in the radical cyclization reaction of a β-alkoxymethacrylate intermediate.
Synthons for Polyketides: An Improved Synthesis of Methyl 3,3-Dialkoxy-2-methylpropanoates
Walkup, Robert D.,Obeyesekere, Nihal U.
, p. 607 - 611 (2007/10/02)
A versatile conversion of methyl methacrylate to methyl 3,3-dialkoxy-2-methylpropanoates proceeds via bromination, then treatment with excess sodium methoxide to yield methyl 3,3-dimethoxy-2-methylpropanoate, which can be transacetalized by treatment with alcohols under acid catalysis to yield the title compounds.Stereoselective chain-extension reactions of these compounds by aldol additions to the aldehydes derived from the ester group (C-1), or by titanium(IV)-mediated allylsilane additions to the acetal carbon (C-3), are examples of the potential utility of methyl 3,3-dialkoxy-2-methylpropanoates to natural products syntheses.
DICHLOROMETHYL ALKYL ETHERS AND SULFIDES IN THE REFORMATSKII REACTION
Lapkin, I. I.,Fotin, V. V.
, p. 659 - 663 (2007/10/02)
A study was carried out on the reaction of dichloromethyl alkyl ethers and sulfides with α-brominated esters in the presence of zinc resulting in the formation of either α-alkyl-β-alkoxyacrylates (or α-alkyl-β-alkylthioacrylates) or α,α,α',α'-tetramethyl-β-alkoxyglutaric acid ( or α,α,α',α'-tetramethyl-β-alkylthioglutaric acid) depending on the structure of the starting bromoester.PMR and IR spectroscopy indicates the geometry of the α-alkyl-β-alkoxyacrylates and α-alkyl-β-alkylthioacrylates.
