A direct synthesis of olefins by reaction of carbonyl compounds with lithio derivatives of 2-[alkyl- or (2′-alkenyl)- or benzyl-sulfonyl]-benzothiazoles.
作者:Jean Bernard Baudin、Georges Hareau、Sylvestre A. Julia、Odile Ruel
DOI:10.1016/s0040-4039(00)92037-9
日期:1991.2
During the title reaction, the lithium alkoxides formed as intermediates undergo an intramolecular addition to the neighboring CN group followed an S to 0 benzothiazole transfer and simultaneous extrustion of sulfur dioxide and ejection of 2(3H)-benzothiazolone anion.
Unexpected<i>cis</i>-Selectivity in (Sylvestre) Julia Olefinations with Bu<sub>3</sub>Sn-Containing Allyl Benzothiazolyl Sulfones: Stereoselective Synthesis of 1,3-Butadienyl- and 1,3,5-Hexatrienylstannanes
作者:Reinhard Brückner、Achim Sorg
DOI:10.1055/s-2004-837213
日期:——
Bu3Sn-substituted benzothiazolyl sulfones 1c, 1d, and 1f were subjected to Julia olefination reactions with a variety of aldehydes. cis-Selectivities up to 97:3 were obtained by using KHMDS as base in THF.
Benzothiazole Sulfinate: A Sulfinic Acid Transfer Reagent under Oxidation-Free Conditions
作者:Jacob J. Day、Deshka L. Neill、Shi Xu、Ming Xian
DOI:10.1021/acs.orglett.7b01693
日期:2017.7.21
commonly encountered intermediates found in natural product synthesis and medicinal chemistry. However, because of high reactivity, instability, and harsh reaction conditions, they are difficult to synthesize. Herein we have developed an oxidation-free method to produce sulfinic acids and sulfinate salts using 2-sulfinyl benzothiazole (BTS). We have also demonstrated the synthetic usefulness by developing
[EN] FURAN DERIVATIVES, METHOD OF SYNTHESIS AND USES THEREOF<br/>[FR] DÉRIVÉS DU FURANE, LEUR PROCÉDÉ DE SYNTHÈSE ET LEURS UTILISATIONS
申请人:NEUROPHARMA SA
公开号:WO2008080986A1
公开(公告)日:2008-07-10
[EN] The present invention relates to furan derivatives of formula (I), their method of synthesis and uses thereof. Concretely, the compounds disclosed have proved to be inhibitors of glycogen synthase kinase 3ß, GSK-3 ß, which is known to be involved in different disease and conditions, such as Alzheimer's disease or non-insulin dependent diabetes mellitus. The present invention also relates to pharmaceutical compositions comprising the same. Further, the present invention is directed to the use of the compounds in the manufacture of a medicament for the treatment and/or prevention of a GSK-3 mediated disease or condition. [FR] La présente invention porte sur des dérivés de furane représentés par la formule (I), sur leur procédé de synthèse et sur leurs utilisations. De façon concrète, les composés décrits se sont révélés être des inhibiteurs de la glycogène synthase kinase 3ß, GSK-3 ß, qui est reconnue comme étant impliquée dans différentes maladies et états, tels que la maladie d'Alzheimer ou le diabète sucré non dépendant de l'insuline. La présente invention porte également sur des compositions pharmaceutiques comportant ces dérivés. De plus, la présente invention porte sur l'utilisation des composés dans la fabrication d'un médicament pour le traitement et/ou la prévention de maladie ou d'état à médiation par GSK-3.