[EN] PEPTIDOMIMETIC N5-METHYL-N2-(NONANOYL-L-LEUCYL)-L-GLUTAMINATE DERIVATIVES, TRIAZASPIRO[4.14]NONADECANE DERIVATIVES AND SIMILAR COMPOUNDS AS INHIBITORS OF NOROVIRUS AND CORONAVIRUS REPLICATION [FR] DÉRIVÉS DE N5-MÉTHYL-N2-(NONANOYL-L-LEUCYL)-L-GLUTAMINATE PEPTIDOMIMÉTIQUES, DÉRIVÉS DE TRIAZASPIRO[4.14]NONADÉCANE ET COMPOSÉS SIMILAIRES UTILISÉS EN TANT QU'INHIBITEURS DE RÉPLICATION DE NOROVIRUS ET DE CORONAVIRUS
[EN] PEPTIDOMIMETIC N5-METHYL-N2-(NONANOYL-L-LEUCYL)-L-GLUTAMINATE DERIVATIVES, TRIAZASPIRO[4.14]NONADECANE DERIVATIVES AND SIMILAR COMPOUNDS AS INHIBITORS OF NOROVIRUS AND CORONAVIRUS REPLICATION [FR] DÉRIVÉS DE N5-MÉTHYL-N2-(NONANOYL-L-LEUCYL)-L-GLUTAMINATE PEPTIDOMIMÉTIQUES, DÉRIVÉS DE TRIAZASPIRO[4.14]NONADÉCANE ET COMPOSÉS SIMILAIRES UTILISÉS EN TANT QU'INHIBITEURS DE RÉPLICATION DE NOROVIRUS ET DE CORONAVIRUS
of developing a new synthetic methodology using ketenes in sequential cycloaddition steps, we were faced with a competition problem with molecules containing a ketene tethered to more than one reacting partner. To pinpoint the electronic and tethering requirements for a chemoselective reaction, we undertook a series of ketene−alkene [2 + 2] cycloaddition competition experiments. Those experiments were