在这里,我们开发了脂族醛对2-羟基查尔酮的对映选择性加成反应,而2-羟基查耳酮则通过协同有机催化剂促进,从而以优异的对映选择性获得杂合类黄酮。该反应利用2-羟基查耳酮的环异构化在24 W CFL的照射下形成瞬时黄酮,其被原位产生的手性烯胺中间体捕获。通过与瞬时黄酮进行离子配对,手性磷酸的协同作用确保了该反应的出色结果。
Biologically active 1,3-bis-aromatic-prop-2-en-1-ones, 1,3-bis-aromatic-propan-1-ones, and 1,3-bis-aromatic-prop-2-yn-1-ones
申请人:Statens Serum Institute
公开号:US20030065039A1
公开(公告)日:2003-04-03
The invention relates to the use of 1,3-bis-aromatic-prop-2-en-1-ones (chalcones), 1,3-bis-aromatic-propan-1-ones (dihydrochalcones), and 1,3-bis-aromatic-prop-2-yn-1-ones for the preparation of pharmaceutical compositions for the treatment or prophylaxis of a number of serious diseases including i) conditions relating to harmful effects of inflammatory cytokines, ii) conditions involving infection by Helicobacter species, iii) conditions involving infection by viruses, iv) neoplastic disorders, and v) conditions caused by microorganisms or parasites. The invention also relates to novel chalcones and dihydrochalcones (especially alkoxy substituted variants) having advantageous substitution patterns with respect to their effect as drug substances, and to methods of preparing them, as well as to pharmaceutical compositions comprising the novel chalcones. Moreover, the present invention relates to a method for the isolation of Leishmania fumarate reductase, QSAR methodologies for selecting potent compounds for the above-mentioned purposes.
Tepanone, a retrochalcone from Ellipeia cuneifolia
作者:Steven M. Colegate、Laily B. Din、Emilio L. Ghisalberti、Abdul Latiff
DOI:10.1016/0031-9422(92)80377-q
日期:1992.6
Tepanone, (2E)-1-phenyl-3-(2-hydroxy-3,4,6-trimethoxyphenyl)prop-2-enone was isolated from roots and stembark of Ellipeia cuneifolia. The structure was deduced from spectroscopic data and confirmed by synthesis of the methylated derivative, methyltepanone. Methyltepanone exists as the two readily interconvertible trans and cis isomers.
BIOLOGICALLY ACTIVE 1,3-BIS-AROMATIC-PROP-2-EN-1-ONES, 1,3-BIS-AROMATIC-PROPAN-1-ONES, AND 1,3-BIS-AROMATIC-PROP-2-YN-1-ONES
申请人:STATENS SERUMINSTITUT
公开号:EP0996432A2
公开(公告)日:2000-05-03
[EN] BIOLOGICALLY ACTIVE 1,3-BIS-AROMATIC-PROP-2-EN-1-ONES, 1,3-BIS-AROMATIC-PROPAN-1-ONES, AND 1,3-BIS-AROMATIC-PROP-2-YN-1-ONES<br/>[FR] 1,3-BIS-AROMATIQUE-PROP-2-EN-1-ONES, 1,3-BIS-AROMATIQUE-PROPANE-1-ONES ET 1,3-BIS-AROMATIQUE-PROP-2-YN-1-ONES A ACTION BIOLOGIQUE
申请人:——
公开号:WO1999000114A2
公开(公告)日:1999-01-07
[EN] The invention relates to the use of 1,3-bis-aromatic-prop-2-en-1-ones (chalcones), 1,3-bis-aromatic-propan-1-ones (dihydrochalcones), and 1,3-bis-aromatic-prop-2-yn-1-ones for the preparation of pharmaceutical compositions for the treatment or prophylaxis of a number of serious diseases including i) conditions relating to harmful effects of inflammatory cytokines, ii) conditions involving infection by Helicobacter species, iii) conditions involving infections by viruses, iv) neoplastic disorders, and v) conditions caused by microorganisms or parasites. The invention also relates to novel chalcones and dihydrochalcones (especially alkoxy substituted variants) having advantageous substitution patterns with respect to their effect as drug substances, and methods of preparing them, as well as to pharmaceutical compositions comprising the novel chalcones. Moreover, the present invention relates to a method for the isolation of Leishmania fumarate reductase, QSAR methodologies for selecting potent compounds for the above-mentioned purposes. [FR] L'invention concerne l'utilisation de 1,3-bis-aromatique-prop-2-en-ones (chalcones), de 1,2-bis-aromatique-propane-1-ones (dihydrochalcones) et de 1,3-bis-aromatique-prorp-2-yn-1-ones pour préparer des compositions pharmaceutiques s'utilisant dans le traitement et la prophylaxie d'un nombre d'affections graves, comprenant: i) les états liés aux effets nocifs des cytokines inflammatoires, ii) les états occasionnant des infections à Helicobacter, iii) les états occasionnant des infections à virus, iv) des troubles néoplasiques, et v) les états induits par des micro-organismes ou des parasites. L'invention concerne en outre de nouvelles chalcones et des dihydrochalcones (notamment des variantes substituées par alcoxy) ayant des modèles de substitution avantageux quant aux effets qu'elles induisent en tant que substances médicamenteuses. L'invention concerne également des procédés permettant de les préparer, ainsi que des compositions pharmaceutiques contenant ces nouvelles chalcones. L'invention concerne par ailleurs un procédé permettant d'isoler la réductase de fumarate du genre Leishmania, ainsi que des méthodologies de rapport constitution-activité quantitatif pour sélectionner les composés puissants utilisés aux fins mentionnées précédemment.
Highly enantioselective addition of aliphatic aldehydes to 2-hydroxychalcone enabled by cooperative organocatalysts
Herein, we developed an enantioselectiveaddition of aliphatic aldehydes to 2-hydroxychalcone promoted by cooperative organocatalysts, giving access to hybrid flavonoids in excellent enantioselectivities. This reaction took advantage of cycloisomerization of 2-hydroxychalcone to form a transient flavylium under the irradiation of 24 W CFL, which was trapped by the in situ generated chiral enamine intermediate
在这里,我们开发了脂族醛对2-羟基查尔酮的对映选择性加成反应,而2-羟基查耳酮则通过协同有机催化剂促进,从而以优异的对映选择性获得杂合类黄酮。该反应利用2-羟基查耳酮的环异构化在24 W CFL的照射下形成瞬时黄酮,其被原位产生的手性烯胺中间体捕获。通过与瞬时黄酮进行离子配对,手性磷酸的协同作用确保了该反应的出色结果。