A compound represented by the following Formula (1):
wherein, Het
1
represents a bivalent five- or six-membered aromatic heterocyclic residue and may further be substituted; X
a
to X
d
each independently represent a heteroatom and may further be substituted; Y
a
to Y
f
each independently represent a heteroatom or a carbon atom and may further be substituted; the ring bound to Het
1
may have a double bond at any position
A continuous-flow synthesis of annulated and polysubstituted furans from the reaction of ketones and α-haloketones
作者:Mark York
DOI:10.1016/j.tetlet.2011.09.083
日期:2011.11
A synthesis of di-, tri- and tetra-substituted furans from reaction of the corresponding ketones and α-haloketones with LiHMDS is reported. Reaction under continuous-flow conditions gave increased yields and removed the need for external cooling when compared to the unoptimised batch conditions.
importance in various realms of chemistry, furan occupies a position of eminence among heterocycles. Despite the availability of many methodologies for the synthesis of variably substitutedfurans, a modular convenient synthesis of 2,4-disubstituted furans remains challenging. The present work attempts to bridge that gap through a novel annulation-based approach using feedstock chemicals such as methyl ketones
[EN] S1P RECEPTORS MODULATORS<br/>[FR] MODULATEURS DES RÉCEPTEURS S1P
申请人:AKAAL PHARMA PTY LTD
公开号:WO2010042998A1
公开(公告)日:2010-04-22
The invention relates to novel compounds that have S1P receptor modulating activity and, preferably, apoptotic activity and/or anti proliferative activity against cancer cells and other cell types. Further, the invention relates to a pharmaceutical comprising at least one compound of the invention for the treatment of diseases and/or conditions caused by or associated with inappropriate S1P receptor modulating activity or expression, for example, cancer. A further aspect of the invention relates to the use of a pharmaceutical comprising at least one compound of the invention for the manufacture of a medicament for the treatment of diseases and/or conditions caused by or associated with inappropriate S1P receptor modulating activity or expression such as cancer.
Copper(II) Triflate-Catalyzed Nucleophilic Substitution of Propargylic Acetates with Enoxysilanes. A Straightforward Synthetic Route to Polysubstituted Furans
作者:Zhuang-ping Zhan、Shao-pei Wang、Xu-bin Cai、Hui-juan Liu、Jing-liang Yu、Yuan-yuan Cui
DOI:10.1002/adsc.200700234
日期:2007.9.3
A novel and efficient procedure for the synthesis of γ-alkynyl ketones by the nucleophilic substitution of propargylic acetates with enoxysilanes in the presence of a catalytic amount of Copper(II) triflate, has been developed. The substitution reaction can be followed by a 4-toluenesulfonic acid-catalyzed cyclization without purification of the γ-alkynyl ketone intermediates, offering a straightforward