[EN] CYCLOPENTANONE AND CYCLOPENTANONE DERIVATIVES AS POTENT ACTIVATORS OF HSF-1<br/>[FR] AMELIORATIONS RELATIVES A DES COMPOSES PHARMACEUTIQUEMENT UTILES
申请人:CHARTERHOUSE THERAPEUTICS LTD
公开号:WO2004013077A3
公开(公告)日:2004-04-22
Chiral base route to functionalised cyclopentenyl amines: formal synthesis of the cyclopentene core of nucleoside Q
作者:Sally J. Oxenford、Peter O’Brien、Mark R. Shipton
DOI:10.1016/j.tetlet.2004.10.043
日期:2004.11
A chiral base route to a range of highly functionalised amino cyclopentenes has been developed. The key asymmetric step involved the chiral lithium amide base-mediated rearrangement of a protected trans-4-hydroxy cyclopentene oxide to give an allylic alcohol (88% ee). Subsequent Overman rearrangement gave a protected trans-1,2-aminocyclopentenol whereas Mitsunobu substitution with BocNHNs gave a protected cis-amino cyclopentenol. Both are proven intermediates for natural product synthesis. The protected cis-aminocyclopentenol was transformed in a few steps into a precursor of the cyclopentene core of nucleoside Q, a natural product whose deficiency in animals is related to tumour growth. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis of 4-azacyclopent-2-enones and 5,5-dialkyl-4-azacyclopent-2-enones
作者:Jérôme Dauvergne、Alan M Happe、Vasudev Jadhav、David Justice、Marie-Christine Matos、Peter J McCormack、Michael R Pitts、Stanley M Roberts、Sanjay K Singh、Timothy J Snape、John Whittall
DOI:10.1016/j.tet.2004.01.046
日期:2004.3
Three different methods are reported for the preparation of 4-azacyclo-2-enones 1, two of which allow the preparation of the compounds in optically active form. In addition, a facile route to 4-aza-5,5-dimethyleyclopent-2-enones 2 is disclosed. (C) 2004 Elsevier Ltd. All rights reserved.