Dienoxysilanes, methods for their preparation and alpha-ethylenic alpha-halo-aldehydes accessible therefrom

摘要

New dienoxysilanes of general formula: & br / (see appended drawing in bopi) & br / & & br / and new alpha - ethylenic aldehydes alpha - halogenated to which they give access to the general formula: & br / (see appended drawing in bopi) & br / & & br / & these new compounds constitute synthesis intermediates of the large door a new access route to macrolides, such as the pyrénophorine, the norpyrénophorine or vermiculine.