Synthesis of the Apoptosis Inducing Agent Apoptolidin. Assembly of the C(16)−C(28) Fragment
作者:Gary A. Sulikowski、Wai-Man Lee、Bohan Jin、Bin Wu
DOI:10.1021/ol005769v
日期:2000.5.1
[reaction--see text] A stereoselective synthesis of the C(16)-C(28) fragment of the apoptosis inducing agent apoptolidin is described. Key steps include two propionate aldol reactions and a stereoselective Mukaiyama aldol addition of enolsilane 19 to beta-methoxy aldehyde 4.
Toward a total synthesis of an aglycone of spiramycin; a chiron approach to the C-1/C-4 and the C-13/C-15 fragments
作者:P. Breuilles、G. Oddon、D. Uguen
DOI:10.1016/s0040-4039(97)01523-2
日期:1997.9
Acetalisation of p-anisaldehyde by either (R) or (S)-butanetriol has been shown to occur selectively and quantitatively by using Noyori's protocol. The crystalline dioxane derivatives R-6a and S-ba which formed respectively, in these conditions have been convened efficiently into the title fragments of spiramycin. (C) 1997 Elsevier Science Ltd.