Stereochemical Prins cyclization: electronic versus steric effects on the synthesis of 2,4,6-trisubstituted tetrahydropyran rings
作者:Kok-Ping Chan、Ai-Hua Seow、Teck-Peng Loh
DOI:10.1016/j.tetlet.2006.11.023
日期:2007.1
A convenient approach towards the synthesis of both syn- and anti-2,4,6-chlorotetrahydropyrans has been developed. The electronic and steric influences on the stereochemistry of the Prins cyclized products were investigated based on the substituents of the homoallylic alcohol.
(±)-cis-(6-Ethyl-tetrahydropyran-2-yl)-formic acid: a novel substance with antinociceptive properties
作者:L.S.M Miranda、Bruno G Marinho、Suzana G Leitão、Maria Eline Matheus、Patrı́cia D Fernandes、M.L.A.A Vasconcellos
DOI:10.1016/j.bmcl.2003.12.075
日期:2004.3
We described in this paper the first synthesis to the (+/-) cis (6-ethyl-tetrahydropyran-2-yl) formic acid (1) using the very efficient Prins cyclization reaction as strategy to construction of its tetrahydropyran skeleton. This new compound presented a significant antinociceptive property by the tail-flick model. (C) 2004 Elsevier Ltd. All rights reserved.
Design, Prins-cyclization reaction promoting diastereoselective synthesis of 10 new tetrahydropyran derivatives and in vivo antinociceptive evaluations
作者:Saulo L. Capim、Paulo H.P. Carneiro、Paloma C. Castro、Maithê R.M. Barros、Bruno G. Marinho、Mário L.A.A. Vasconcellos
DOI:10.1016/j.ejmech.2012.09.046
日期:2012.12
Prins-cyclization reaction as synthetic key-step to tetrahydropyran rings construction of 10 new congeners compounds (3–12) designed from Naproxen structure. These tetrahydropyranderivatives were in vivo bioevaluated on antinociceptive effect in the acetic acid-induced abdominal writhing test, the tail-flick test, the rota-rod performance and open field tests. All new compounds showed greater antinociceptive