The present invention provides low molecular weight compounds useful as cytokine inhibitors, and compositions thereof. In particular, compounds of the invention are useful as anti-inflammatory agents. There are further provided methods for the preparation of such agents and their use in preventing or treating conditions mediated by cytokines such as arthritis.
The present invention provides low molecular weight compounds useful as cytokine inhibitors, and compositions thereof. In particular, compounds of the invention are useful as anti-inflammatory agents. There are further provided methods for the preparation of such agents and their use in preventing or treating conditions mediated by cytokines such as arthritis.
The present invention provides low molecular weight compounds useful as cytokine inhibitors, and compositions thereof. In particular, compounds of the invention are useful as anti-inflammatory agents. There are further provided methods for the preparation of such agents and their use in preventing or treating conditions medicated by cytokines such as arthritis.
Amidation of carboxylic acids via the mixed carbonic carboxylic anhydrides and its application to synthesis of antidepressant (1 S ,2 R )-tranylcypromine
Primary amidations of carboxylic acids 1 or 3 with NH4Cl in the presence of ClCO2Et and Et3N were developed to afford the corresponding primary amides in 22% to quantitative yields. Additionally, we have applied the amidation to the preparation of various amides containing hydroxamic acids and achieved the synthesis of (1S,2R)-tranylcypromine as an antidepressant medicine via Lossen rearrangement. (C) 2017 Elsevier Ltd. All rights reserved.
Enantioselective acylation of rac-2-phenylcycloalkanamines catalyzed by lipases
The kinetic resolution of some 2-phenylcycloalkanamines was performed by means of aminolysis reactions catalyzed by lipases, with Kazlauskas' rule being obeyed in all cases. The size of the ring and the stereochemistry of the stereogenic centers of the amines had a strong influence on both the enantiomeric ratio and the reaction rate of these aminolysis processes. Lipase B from Candida antarctica (CAL-B) showed excellent enantio selectivities toward trans-2-phenylcyclohexanamine in a variety of reaction conditions (E > 150), whereas lipase A from C antarctica (CAL-A) was the best catalyst for the acylation of cis-2-phenylcyclohexanamine (E = 34) and trans-2-phenylcyclopropanamine (E = 9). (C) 2005 Elsevier Ltd. All rights reserved.