Synthesis of 2- and 3-Indolylpyrroles via 1,3-Dipolar Cycloadditions of Münchnones and Nitroalkenes
摘要:
A series of 2- and 3-indolylpyrroles were generated via 1,3-dipolar cycloadditions between (2-nitrovinyl)indoles and symmetrical and unsymmetrical 1,3-oxazolium-5-olates (munchnones).
Organocatalytic Asymmetric Michael Addition of Aliphatic Aldehydes to Indolylnitroalkenes: Access to Contiguous Stereogenic Tryptamine Precursors
摘要:
Because of the importance of the indole framework and the versatile transformation of nitro and formyl groups, the efficient synthesis of optically pure 2-alkyl-3-(1H-indol-3-yl)-4-nitrobutanals, one type of tryptamine precursors are of great interest for pharmaceutical and biological research. Herein, the Michael addition of aliphatic aldehydes to indolylnitroalkenes has been developed using (S)-diphenylprolinol trimethylsilyl ether as an organocatalyst, which provides the desired optically pure syn 2-alkyl-3-(1H-indol-3-yl)-4-nitrobutanal derivatives in up to 98% yield with up to >99:1 dr and >99% ee. To show the synthetic usefulness of this methodology, optically active 2-alkyl-4-nitro-3-(1-tosyl-1H-indol-3-yl)butan-1-ol and tryptamine derivatives are readily obtained by stepwise systematic transformations.
[EN] N-(2-ARYLETHYL)BENZYLAMINES AS ANTAGONISTS OF THE 5-HT6 RECEPTOR<br/>[FR] N-(2-ARYLETHYL)BENZYLAMINES UTILISEES EN TANT QU'ANTAGONISTES DU RECEPTEUR 5-HT6
申请人:LILLY CO ELI
公开号:WO2002078693A2
公开(公告)日:2002-10-10
The present invention provides compounds of formula (I), which are antagonists of the 5-HT6 receptor.
本发明提供了式(I)的化合物,它们是5-HT6受体的拮抗剂。
N-(2-arylethyl) benzylamines as antagonists of the 5-ht6 receptor
申请人:Chen Zhaogen
公开号:US20060009511A9
公开(公告)日:2006-01-12
The present invention provides compounds of formula (I), which are antagonists of the 5-HT
6
receptor.
本发明提供了式(I)的化合物,它们是5-HT6受体的拮抗剂。
N-(2-ARYLETHYL)BENZYLAMINES AS ANTAGONISTS OF THE 5-HT6 RECEPTOR
申请人:Chen Zhaogen
公开号:US20070099909A1
公开(公告)日:2007-05-03
The present invention provides compounds of formula (I), which are antagonists of the 5-HT
6
receptor.
本发明提供了公式(I)的化合物,它们是5-HT6受体的拮抗剂。
N-(2-ARYLETHYL) BENZYLAMINES AS ANTAGONISTS OF THE 5-HT6 RECEPTOR