Synthetic Strategy toward the C44–C65 Fragment of Mirabalin
摘要:
A convergent and flexible stereoselective synthesis of one isomer of the C44-C65 fragment of mirabalin is described. The key steps include organocatalytic aldolization, ruthenium-catalyzed asymmetric hydrogenation, amide formation, Marshall stereoselective allenylation, and the Nozaki-Hiyama-Kishi reaction.
Synthetic Strategy toward the C44–C65 Fragment of Mirabalin
摘要:
A convergent and flexible stereoselective synthesis of one isomer of the C44-C65 fragment of mirabalin is described. The key steps include organocatalytic aldolization, ruthenium-catalyzed asymmetric hydrogenation, amide formation, Marshall stereoselective allenylation, and the Nozaki-Hiyama-Kishi reaction.
Enantioselective synthesis of prelactone B using a proline-catalyzed crossed-aldol reaction
作者:Petri M. Pihko、Anniina Erkkilä
DOI:10.1016/j.tetlet.2003.08.060
日期:2003.10
Catalytic enantioselective synthesis of prelactone B has been achieved in only four steps. A direct proline-catalyzed aldehyde–aldehyde aldol reaction is employed as the sole source of chirality.
Allyltrichlorostannane additions to chiral aldehydes
作者:Luiz Carlos Dias、Débora Ribeiro dos Santos、Leonardo José Steil
DOI:10.1016/s0040-4039(03)01713-1
日期:2003.9
Chiral and achiral allyltrichlorostannanes reacted with chiral beta-alkoxy and syn and anti alpha-methyl-beta-alkoxy aldehydes to give the corresponding homoallylic alcohols with moderate to high diastereoselectivities. (C) 2003 Elsevier Ltd. All rights reserved.
Addition of lactate-derived chiral allyltrichlorostannanes to chiral aldehydes
作者:Luiz C. Dias、Leonardo J. Steil
DOI:10.1016/j.tetlet.2004.09.186
日期:2004.11
Chiral lactate-derived allyltrichlorostannanes reacted with chiral alpha-methyl beta-alkoxy and syn and anti alpha-methyl-beta-alkoxy aldehydes to give the corresponding homoallylic alcohols with moderate to high 1,4-syn-diastereoselectivities. (C) 2004 Elsevier Ltd. All rights reserved.