在平行合成条件下深入研究了卤代(杂)芳烃磺酰卤胺化物的化学选择性,并确定了该方法的范围和局限性。结果表明, SN Ar反应性磺酰卤通常在第一步中进行磺酰胺合成;如果SN Ar活性中心具有足够的反应性,则第二次胺化也是可能的。相反,带有芳基化部分的磺酰氟在适当的控制下在后一个反应中心发生选择性转化。进一步的硫-氟化物交换(SuFEx)也是可能的,这对于某些磺酰卤类特别有价值。开发的两步并行双胺化方案提供了对 66.7 亿个化合物的合成可处理 REAL 型化学空间的访问(预期合成成功率 76%)。
Method for the production of emulsion-based microparticles
申请人:Evonik Corporation
公开号:US10272044B2
公开(公告)日:2019-04-30
The apparatus and methods of the present invention are of use for the production of emulsion-based microparticles containing a biological or chemical agent. In particular, the apparatus provides a vessel; packing material situated inside such vessel and may further provide material capable of insertion into both ends of said vessel for enclosure of the packing material. In a particular embodiment, the apparatus is a packed bed apparatus. The methods include production of emulsion based microparticles containing a biological or chemical agent. The usefulness of the present invention is that the apparatus and methods of the present invention provide for a low-shear, non-turbulent, production of emulsion-based microparticles that provides a narrow, reproducible, particle size distribution, capable of use with both large and small volumes that is capable of being conveniently scaled up while providing predictable emulsion properties.
The idea of introducing (cyclo)alkyl substituents at the C-3 atom of the piperidine ring, that is, formal sp(3)-sp(3) retrosynthetic disconnection, is implemented through a two-step reaction sequence including directed ortho metalation of a pyridine derivative and the subsequent quenching with a carbonyl compound, followed by catalytic hydrogenation. This robust but very efficient method allows for multigram preparation of sp(3)-rich 3-(cyclo)alkylpiperidines, which are valuable building blocks for medicinal chemistry and other areas.
SUBSTITUTED FUSED TRICYCLIC COMPOUNDS, COMPOSITIONS AND MEDICINAL APPLICATIONS THEREOF
申请人:Advinus Therapeutics Limited
公开号:EP2688890B1
公开(公告)日:2017-08-30
US7101892B2
申请人:——
公开号:US7101892B2
公开(公告)日:2006-09-05
Sulfone derivatives as 5-HT7 receptor ligands
申请人:——
公开号:US20040229864A1
公开(公告)日:2004-11-18
The present invention relates to sulfone derivatives of formula (I):
Ar—SO
2
—CR
2
R
3
-L-N(R
1
)
2
I
wherein Ar, L, R
1
, R
2
and R
3
are as defined herein, and pharmaceutically acceptable salts and N-oxides thereof, useful in the treatment of a condition which is susceptible to treatment by modulation of 5-HT
7
receptor activity, such as depression or a sleep disorder.