473536-57-1Relevant articles and documents
The preparation of α-alkylidene-γ-butyrolactones using a telescoped intramolecular Michael/Olefination (TIMO) sequence: Synthesis of (+)-paeonilactone B
Edwards, Michael G.,Kenworthy, Martin N.,Kitson, Russell R. A.,Perry, Alexis,Scott, Mark S.,Whitwood, Adrian C.,Taylor, Richard J. K.
experimental part, p. 4769 - 4783 (2009/05/27)
A novel telescoped intramolecular Michael addition/proton transfer/HWE olefination sequence has been developed to provide rapid access to α-alkylidene-γ-butyrolactones. This methodology has been applied to prepare a range of tetrahydrobenzofuran-2,5-diones, and related systems, and also utilised in an extremely short synthesis of the natural product (+)-paeonilactone B in enantiomerically pure form. In addition, preliminary experiments are described that illustrate a palladium-catalysed variant proceeding by way of a π-allyl intermediate. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
Enantioselective synthesis of natural polyoxygenated cyclohexanes and cyclohexenes from [(p-tolylsulfinyl)methyl]-p-quinols
Carreno, M. Carmen,Merino, Estibaliz,Ribagorda, Maria,Somoza, Alvaro,Urbano, Antonio
, p. 1064 - 1077 (2007/10/03)
Exploitation of the β-hydroxysulfoxide fragment present in a number of enantiomerically pure (SR)and (SS)-[(p-tolylsulfinyl)methyl]-pquinols allowed chemo- and stereocontrolled conjugate additions of different organoaluminium reagents to the cyclohexadien
Enantioselective total synthesis of angucyclinone-type antibiotics rubiginones A2 and C2
Carreno, M. Carmen,Ribagorda, Maria,Somoza, Alvaro,Urbano, Antonio
, p. 2755 - 2757 (2007/10/03)
The tetracyclic skeleton of C4-oxygenated angucyclinone-type antibiotics rubiginones A2 ((+)-3) and C2 ((-)-4) is constructed by Diels-Alder reaction of a racemic sulfinyl-substituted methyl juglone and the enantiopure vinyl cyclohex