Lewis Acid Catalyzed Reaction of<i>o</i>-[1-(Alkylthio)alkyl]phenols: The Generation and Reaction of<i>o</i>-Quinonemethides and Applications to Cannabinoid Synthesis
作者:Tsutomu Inoue、Seiichi Inoue、Kikumasa Sato
DOI:10.1246/bcsj.63.1647
日期:1990.6
o-Quinonemethides were prepared by treating o-[1-(alkylthio)alkyl]phenols with a Lewis acid. The Diels–Alder reaction of the resulting o-quinonemethides was also catalyzed by the Lewis acid. Hexahydrocanna-binol was synthesized according to this method.
Preparation and reactions of s,s-dimethyl-n-(2,4-dinitrophenyl)sulfilimine
作者:T. Yamamoto、Y. Harigaya、M. Okawara
DOI:10.1016/0040-4020(78)87005-7
日期:1978.1
S,S-Dimethyl-N-(2,4-dinitrophenyl)sulfilimine(4a) has been prepared in good yield by use of DMSO, 2,4-dinitroaniline and phosphorus pentoxide in DMF and the role of DMF in this System is discussed. The method has been applied successfully to the syntheses of several sulfilimines. The reactions of 4a with protonic compounds show an interesting ylide-exchange reaction.
t-Butyl bromide-activated dimethyl sulphoxide reacts with phenols to give either methylthiomethylation or bromination products. Several equilibria are shown to be simultaneously present in the system; however, by appropriate choice of several parameters (basicity, temperature, and reactant ratio) it is possible to drive the reaction selectively in one direction. A general discussion on the mechanism
Ortho-Selective Alkylation of Phenols with Symmetric Sulfides and Sulfuryl Chloride
作者:Kikumasa Sato、Seiichi Inoue、Osamu Miyamoto、Hiroshi Ikeda、Tomomi Ota
DOI:10.1246/bcsj.60.4184
日期:1987.11
Sulfuryl chloride has been shown to be useful activator for sulfides in the selective preparation of ortho-alkylated phenolsvia [2,3]sigmatropicrearrangement. By this process, ortho-alkylated phenols have been prepared with various symmetric sulfides in good yields. The rearrangement products having 3-chloropropyl or 3-methyl-3-butenyl moiety have been converted into 2H-1-benzopyran derivatives.
[EN] BIARYL DERIVATIVES AS SELECTIVE 17BETA-HYDROXYSTEROID DEHYDROGENASE TYPE 2 INHIBITORS<br/>[FR] DÉRIVÉS BIARYLE EN TANT QU'INHIBITEURS SÉLECTIFS DE LA 17BÊTA-HYDROXYSTÉROÏDE DÉSHYDROGÉNASE DE TYPE 2
申请人:UNIV SAARLAND
公开号:WO2012117097A1
公开(公告)日:2012-09-07
The invention relates to selective, non-steroidal 17beta-hydroxysteroid dehydrogenase type 2 (17beta-HSD2) inhibitors of formula (I), their production and use, notably for the treatment and prophylaxis of sex steroid deficient diseases like osteoporosis in men and women.