160456-56-4Relevant articles and documents
Studies culminating in the total synthesis and determination of the absolute configuration of (-)-saudin
Boeckman Jr., Robert K.,Rosario Ferreira, Maria Rico Del,Mitchell, Lorna H.,Shao, Pengcheng,Neeb, Michael J.,Fang, Yue
experimental part, p. 9787 - 9808 (2012/02/05)
A full account of studies that culminated in the total synthesis of both antipodes and the assignment of its absolute configuration of Saudin, a hypoglycemic natural product. Two approaches are described, the first proceeding though bicyclic lactone intermediates and related second monocyclic esters. The former was obtained via asymmetric Diels-Alder cycloaddition and the latter by an asymmetric annulation protocol. Both approaches employ a Lewis acid promoted Claisen rearrangement, with the successful approach taking advantage of bidentate chelation to control the facial selectivity of the key Claisen rearrangement.
A novel synthesis of functionalized tetrahydrofurans by an Oxa-Michael/Michael cyclization of γ-hydroxyenones
Greatrex, Ben W.,Kimber, Marc C.,Taylor, Dennis K.,Tiekink, Edward R. T.
, p. 4239 - 4246 (2007/10/03)
An approach to highly functionalized tetrahydrofuran derivatives based upon a novel Oxa-Michael/ Michael dimerization of cis-γ-hydroxyenones is presented. The reaction begins with either 1,2-dioxines or trans-γ-hydroxyenones and proceeds by addition of on
Synthetic study on gymnodimine: Highly stereoselective construction of substituted tetrahydrofuran and cyclohexene moieties
Ishihara, Jun,Miyakawa, Jun,Tsujimoto, Takashi,Murai, Akio
, p. 1417 - 1419 (2007/10/03)
The synthetic studies on gymnodimine, a shellfish toxin, are described. This marine toxin consists of 16-membered carbocycle, tetrahydrofuran, and spiro-imine moieties. Our synthetic strategy involves the stereoselective allylation of tetrahydrofuran compound and the exo-selective intramolecular Diels-Alder reaction.
Total Synthesis of C31-Methyl Ketone Apocarotenoids: Sintaxanthin and (3R)-3-Hydroxysintaxanthin
Haugan, Jarle Andre
, p. 657 - 664 (2007/10/02)
The previously undescribed (all-E)-2,7,11-trimethyl-12-oxo-2,4,6,8,10-tridecapentenal has been synthesised in 26percent overall yield in six steps from the readily available 3-methyl-2-penten-4-yn-1-ol and 2,7-dimethyl-2,4,6-octatrienedial.This C16-keto aldehyde was used in the first total synthesis of fully characterised (all-E)-sintaxanthin and optically active (all-E)-(3R)-3-hydroxysintaxanthin.The C16-keto aldehyde is a versatile building block for any C31-methyl ketone apocarotenoid.