Stereoselective Syntheses of the C(1)−C(9) Fragment of Amphidinolide C
作者:Robert H. Bates、J. Brad Shotwell、William R. Roush
DOI:10.1021/ol801852j
日期:2008.10.2
Stereoselective syntheses of the C(1)-C(9) fragments 18 and 28 of amphidinolide C have been developed. The first-generation sequence involves a diastereoselective chelate-controlled [3 + 2]-annulation reaction of 6 and 7, while the second-generation synthesis involves an intramolecular hetero-Michael cyclization of 8.
Efficient Synthesis of the C(1)−C(9) Fragment of Amphidinolides C, C2, and F
作者:Laurent Ferrié、Bruno Figadère
DOI:10.1021/ol1021228
日期:2010.11.5
The synthesis of the C(1)−C(9) fragment of amphidinolides C, C2, and F was achieved by using a vinyloguous Mukaiyama aldol reaction on a chiral aldehyde with a silyloxyfuran and by using a C-glycosylation of a lactol derivative with an acetyl oxazolidinethione. From the available chiral acetonide−glyceraldehyde, all the stereogenic centers were perfectly induced along the synthesis. The C(1)−C(9) fragment