133043-10-4Relevant articles and documents
Reductive cyclizations of hydroxysulfinyl ketones: Enantioselective access to tetrahydropyran and tetrahydrofuran derivatives
Carreno, M. Carmen,Des Mazery, Renaud,Urbano, Antonio,Colobert, Francoise,Solladie, Guy
, p. 7779 - 7787 (2003)
The stereocontrolled formation of cis-2,5-disubstituted tetrahydrofurans and cis-2,6-disubstituted tetrahydropyrans is achieved from enantiopure ketosulfinyl esters by reduction, Weinreb's amide, and ketone formation, followed by the reductive cyclization (Et3SiH/TMSOTf) of the resulting hydroxysulfinyl ketones. The sulfoxide-bearing heterocycles were transformed into two natural products, (-)-centrolobine (1) and both enantiomers of cis-(6-methyltetrahydropyran-2-yl)acetic acid (2).
Formal synthesis of (-)-frontalin through diastereoselective hydrocyanation of a β-keto sulfoxide
Ortiz, Benjamin,Sanchez-Obregon, Ruben,Toscano, Ruben A.,Yuste, Francisco
experimental part, p. 2105 - 2109 (2009/04/03)
The diastereoselective synthesis of (S)-4-(2,2,4-trimeth-yl-l,3-dioxolan-4- yl)butan-l-ol (9), an intermediate in the asymmetric synthesis of the pine beetle pheromone (-)-frontalin [(1S,5R)-l,5-dimethyl-6,8-dioxabicyclo[3.2.1] octane] (1), has been accomplished starting from the ss-keto sulfoxide 2, derived from gl-utaric anhydride. The key step of the synthetic sequence is the diastereoselective hydrocyanation of 2 by diethylaluminum cyanide. Thieme Stuttgart.
First enantioselective total synthesis of (-)-Centrolobine.
Colobert, Francoise,Mazery, Renaud Des,Solladie, Guy,Carreno, M Carmen
, p. 1723 - 1725 (2007/10/03)
[structure: see text] The first enantioselective total synthesis of (-)-Centrolobine is described. The key reaction is the synthesis of the cis-disubstituted tetrahydropyran framework by intramolecular cyclization of the enantiopure hydroxyketone 3 with E
Enantioselective Synthesis of γ- and δ-Lactones
Ruano, Jose L. Garcia,Fuerte, Araceli,Maestro, M. Carmen
, p. 1443 - 1446 (2007/10/02)
The synthesis of enantiomerically pure sulfinyl oxoacids HO2CCH2(CH2)nCOCH(R)SOTol (n = 1 and 2, R = H, CH3), and their stereoselective reduction with DIBAL catalysed by ZnBr2 are reported.The resulting hydroxysulfoxides were cyclized in situ u
Asymmetric Synthesis of (S)-Zearalenone Dimethyl Ether, an Orsellinic Acid Type Macrolide
Solladie, Guy,Maestro, M. Carmen,Rubio, Almudena,Pedregal, Concepcion,Carreno, M. Carmen,Ruano, Jose L. Garcia
, p. 2317 - 2322 (2007/10/02)
The synthesis of (S)-zearalenone dimethyl ether is described.The chiral part of the molecule was obtained by asymmetric synthesis monitored by a chiral sulfoxide group and introduced in the very last steps of the synthesis.