82792-89-0Relevant academic research and scientific papers
Diels-Alder Additions to 1-Phenyl-2-benzopyran-3-one and Transformations of the Adducts: Model Experiments for Podophyllotoxin Synthesis
Jones, David W.
, p. 399 - 406 (2007/10/02)
1-Phenyl-2-benzopyran-3-one 2 adds to a series of unsymmetrically substituted dienophiles (methyl acrylate, ethyl crotonate, methyl ω-bromocrotonate, and crotonaldehyde) with regioselectivity largely determined by the phenyl group but with little endo-exo
The Synthesis and Relative Configuration of (+/-)-Lirionol
Weeratunga, Gamini,Rajapaksa, Dayananda,Rodrigo, Russell
, p. 5902 - 5905 (2007/10/02)
The synthesis of C-9 epimers 1 and 2 of the natural lignan lirionol is described.The relative configuration of the natural material is thereby established as 2 contrary to the previous assignment.
The Synthesis of Lignans and Related Structures using Quinodimethanes and Isobenzofurans: Approaches to the Podophyllins
Mann, John,Piper, Susan E.,Yeung, Lilan K.P.
, p. 2081 - 2088 (2007/10/02)
Novel routes to 1-aryl-5,6-dialkoxy-1,3-dihydrobenzothiophene 2,2-dioxides (13) and to the corresponding benzofuran (8) have been developed; these species yield quinodimethanes (12) via thermal extrusion of SO2 and isobenzofurans (5c) in an acid-cat
The Preparation of Lignans via Intermolecular Cycloadditions with Quinodimethanes
Mann, John,Piper, Susan E.
, p. 430 - 432 (2007/10/02)
Certain lignans can be prepared using, as the key step, a thermal reaction between 1-(aryl)-1,3-dihydro-5,6-dialkoxy-benzothiophen 2,2-dioxides and dienophiles.
