Fast continuous alcohol amination employing a hydrogen borrowing protocol
作者:Ricardo Labes、Carlos Mateos、Claudio Battilocchio、Yiding Chen、Paul Dingwall、Graham R. Cumming、Juan A. Rincón、Maria José Nieves-Remacha、Steven V. Ley
DOI:10.1039/c8gc03328e
日期:——
A continuous flow method for the direct conversion of alcohols to amines via a hydrogen borrowing approach is reported. The method utilises a low loading (0.5%) of a commercial catalyst system ([Ru(p-cymene)Cl2]2 and DPEPhos), reagent grade solvent and is selective for primary alcohols. Successful methylation of amines using methanol and the direct dimethylamination of alcohols using commercial dimethylamine
Efficient and recyclable ruthenium catalysts were synthesized from readily available polystyrene‐ or silica‐supported phosphine ligands. Catalysts bound to the polymer support through an ether linkage showed good to excellent activity towards the N‐alkylation of primary and secondary amines to afford the alkylated products in 62–99 % yield at 120–140 °C. The supported phosphine ligand/ruthenium ratio
Gonadotropin Releasing Hormone Receptor Antagonist, Preparation Method Thereof And Pharmaceutical Composition Comprising The Same
申请人:Kim Seon Mi
公开号:US20130137661A1
公开(公告)日:2013-05-30
Disclosed are compounds useful as gonadotrophin-releasing hormone (“GnRH”) receptor antagonist.
披露了作为促性腺激素释放激素(“GnRH”)受体拮抗剂有用的化合物。
Synthesis of Azaspirocycles and their Evaluation in Drug Discovery
作者:Johannes A. Burkhard、Björn Wagner、Holger Fischer、Franz Schuler、Klaus Müller、Erick M. Carreira
DOI:10.1002/anie.200907108
日期:2010.5.3
Make it spiro! Readily synthesized heteroatom‐substituted spiro[3.3]heptanes generally show higher aqueous solubility than their cyclohexane analogues, and show a trend towards higher metabolic stability. The novel framework can be mounted onto scaffolds of druglike structures, such as fluoroquinolones, to afford active compounds with similar or even improved metabolic stability.
An object of the present invention is to provide a medicinal drug much improved in anti tumor activity and excellent in safety. According to the present invention, there is provided a medicinal drug containing a compound represented by the following general formula (1) or a salt thereof as an active ingredient: [Formula 1] wherein X
1
represents a nitrogen atom or a group —CH═, R
1
represents a group -Z-R
6
, in which Z represents a group —CO—, a group —CH(OH)— or the like, R
6
represents a 5- to 15-membered monocyclic, dicyclic or tricyclic saturated or unsaturated heterocyclic group having 1 to 4 nitrogen atoms, oxygen atoms or sulfur atoms, R
2
represents a hydrogen atom or a halogen atom, Y represents a group —O—, a group —CO—, a group —CH(OH)— or a lower alkylene group, and A represents [Formula 2] wherein R
3
represents a hydrogen atom, a lower alkoxy group or the like, p represents 1 or 2, R
4
represents an imidazolyl lower alkyl group or the like.