An attractive route to transamidation catalysis: Facile synthesis of new o-aryloxide-N-heterocyclic carbene ruthenium(II) complexes containing trans triphenylphosphine donors
摘要:
Well-defined robust ruthenium(II) complexes 3a-d bearing o-aryloxide-N-heterocyclic carbene ligands with different wingtip substituents (3a (R= Me), 3b (R= Ph), 3c (R= Pr-i) and 3d (R= Mes)) in the imidazole ring were synthesized in good yields by the reaction of imidazolium proligands with metal precursor [RuHCl(CO)(PPh3)(3)] by transmetallation from the corresponding silver carbene complexes. All the Ru(II)-NHC complexes have been characterized by elemental analyses, spectroscopic methods as well as ESI mass spectrometry. The molecular structure of the complex 3a was identified by means of single-crystal X-ray diffraction analysis, which revealed that the complexes possess a distorted octahedral geometry. In order to explore the catalytic potential of the synthesized complexes, all the four [Ru-NHC] complexes [3a-d] were tested as catalysts for transamidation of carboxamides with amines. Notably, the complex 3a was found to be very efficient and versatile catalyst toward transamidation of a wide range of amides with amines. (C) 2015 Elsevier B.V. All rights reserved.
Tricycloundecane compounds useful as modulators of nuclear hormone receptor function
申请人:Balog Aaron James
公开号:US20070088029A1
公开(公告)日:2007-04-19
Tricycloundecanes compounds, methods of using such compounds in the treatment of nuclear hormone receptor-associated conditions such as cancer and immune disorders, and pharmaceutical compositions containing such compounds are disclosed.
A novel pyrazole derivative of the following formula having a histamine H3 receptor antagonistic effect:
or a pharmaceutically acceptable salt thereof or a pharmaceutical preparation comprising the same as an active ingredient is effective for prevention or treatment of dementia, Alzheimer's disease, attention-deficit hyperactivity disorder, schizophrenia, eating disorders, obesity, diabetes, hyperlipidemia, sleep disorders, narcolepsy, sleep apnea syndrome, circadian rhythm disorder, depression, allergic rhinitis or other diseases.
[EN] COMPOUNDS HAVING BETA-AGONIST ACTIVITY<br/>[FR] COMPOSES PRESENTANT UNE ACTIVITE BETA-AGONISTE
申请人:PFIZER LTD
公开号:WO2005092841A1
公开(公告)日:2005-10-06
The invention relates to compounds of formula (1) and to processes for the preparation of, intermediates used in the preparation of, compositions containing and the uses of, such derivatives. The compounds according to the present invention are useful in numerous diseases, disorders and conditions, in particular inflammatory, allergic and respiratory diseases, disorders and conditions.
[EN] COMPOUNDS AND METHODS OF USE<br/>[FR] COMPOSÉS ET LEURS PROCÉDÉS D'UTILISATION
申请人:MEDIVATION TECHNOLOGIES INC
公开号:WO2015103355A1
公开(公告)日:2015-07-09
This disclosure provides compounds and compositions and methods of using those compounds and compositions to treat diseases and disorders associated with excessive transforming growth factor-beta (TGFβ) activity. This disclosure also provides methods of using the compounds in combination with one or more cancer immunotherapies.
Decarboxylative Ritter-Type Amination by Cooperative Iodine (I/III)─Boron Lewis Acid Catalysis
作者:Rok Narobe、Kathiravan Murugesan、Simon Schmid、Burkhard König
DOI:10.1021/acscatal.1c05077
日期:2022.1.7
intermediates also on electronically disfavored benzylic positions. The unusually high reactivity of the system stems from a complexation of iodine (III) intermediates with BF3. The synthetic utility of our decarboxylative Ritter-type amination protocol has been demonstrated by the functionalization of benzylic as well as aliphatic carboxylic acids, including late-stage modification of different pharmaceutical