4-Bromo-6-spiroepoxycyclohexa-2,4-dienone reacts as a diene in an inverse electron-demand reaction with 1-ethoxy-3-methoxy-1-trimethylsilyloxybuta-1,3-diene but as a dienophile with 1-ethoxy-3-methylene-4-(ethoxy trimethylsilyloxymethylene)-1-cyclohexene.
The reaction of spiroepoxycyclohexadienones towards cyanide nucleophiles
作者:Rubén Córdoba、Aurelio G Csákÿ、Joaquı́n Plumet、Fernando López Ortiz、Rafael Herrera、Hugo A Jiménez-Vázquez、Joaquı́n Tamariz
DOI:10.1016/j.tet.2004.03.007
日期:2004.4
The reaction of spiroepoxycyclohexadienones 1 with TMSCN in the presence of catalytic amounts of Bu4NCN results in the formation of two diastereomeric cyanohydrins. Alternatively, the reaction of 1 with equimolecular amounts of Bu4NCN gave rise to products arising from two other different reaction paths.
Antiangiogenic versus cytotoxic activity in analogues of aeroplysinin-1
作者:Rubén Córdoba、Nélida Salvador Tormo、Antonio Fernández Medarde、Joaquín Plumet
DOI:10.1016/j.bmc.2007.05.011
日期:2007.8
A series of analogues of the potentially angiogenic inhibitor aeroplysinin-l 1 were synthesized and their in vitro antiangiogenic and cytotoxic activities evaluated. In the case of epoxy ketone 6 and azlactone 36 the relationship sprouting inhibition assayl cytotoxicity in BAE cells was enhanced by one order and two orders of magnitude, respectively, with respect to the reference. These results imply more specific antiangiogenic properties for the synthesized derivatives. (c) 2007 Elsevier Ltd. All rights reserved.