Enantioselective Synthesis of Eucomols Using Sharpless Catalytic Asymmetric Dihydroxylation
摘要:
A novel synthetic method was developed for eucomols, (S)-3-hydroxyomoisoflavanones. Addition of aryllithium to aldehyde ((S)-9) obtained by asymmetric dihydroxylation of 4, followed by the formation of cyclic ether, gave eucomols, (S)-3-hydroxyhomoisoflavanones (1a-e).
Enantioselective Synthesis of Eucomols Using Sharpless Catalytic Asymmetric Dihydroxylation
摘要:
A novel synthetic method was developed for eucomols, (S)-3-hydroxyomoisoflavanones. Addition of aryllithium to aldehyde ((S)-9) obtained by asymmetric dihydroxylation of 4, followed by the formation of cyclic ether, gave eucomols, (S)-3-hydroxyhomoisoflavanones (1a-e).
Pd-Catalyzed Threefold Arylation of Baylis-Hillman Bromides and Acetates with Triarylbismuth Reagents
作者:Maddali L. N. Rao、Somnath Giri
DOI:10.1002/ejoc.201200543
日期:2012.8
alkyl 2-benzylacrylates and 2-benzylacrylonitriles were synthesized by means of atom-economic cross-couplings of Baylis–Hillmanbromides or acetates with BiAr3 under palladium-catalyzed conditions. These reactions, involving threefold aryl couplings using BiAr3 reagents with bromides and acetates, are fast and are completed in 1–2 h with high product yields.
.beta.-mercapto-propanamide derivatives useful in the treatment of
申请人:Zambon Group S.p.A.
公开号:US05506259A1
公开(公告)日:1996-04-09
Compounds of formula ##STR1## wherein R, R.sub.1, R.sub.2, Het and n have the meanings reported in the description, processes for their preparation and pharmaceutical compositions which contain them as active ingredients are described. The compounds of formula I are useful in the treatment of cardiovascular diseases.