Tetraflic Acid (1,1,2,2-Tetrafluoroethanesulfonic Acid, HC2F4SO3H) and Gallium Tetraflate as Effective Catalysts in Organic Synthesis
作者:G. K. Surya Prakash、Thomas Mathew、Chiradeep Panja、Aditya Kulkarni、George A. Olah、Mark A. Harmer
DOI:10.1002/adsc.201200111
日期:2012.8.13
Tetraflic acid offers ample acidity for various organic reactions that require high acidity. Its gallium(III) salt is an efficientcatalyst under mild condtions for synthetic transformations such as the ketonic Streckerreaction for the synthesis of fluorinated α-aminonitriles and condensation–cyclzation reactionsusing suitable fluoro ketones and 1,2-disubstituted benzenes for the direct preparation
An environmentally friendly and highly active mesoporous Co(II) complex on mesoporous SBA-15 material could be used as an easily recoverable catalyst for the synthesis of α-aminonitriles from a wide range of aldehydes/ketones and primary or secondary amines with good to excellent conversions yields at room temperature under solventless conditions. The catalyst can be recovered by simple filtration and could be reused at least 10 times without loss of catalytic activity.
[EN] ANDROGEN RECEPTOR ANTAGONISTS AND USES THEREOF<br/>[FR] ANTAGONISTES DU RÉCEPTEUR DES ANDROGÈNES ET LEURS UTILISATIONS
申请人:TONG YOUZHI
公开号:WO2011029392A1
公开(公告)日:2011-03-17
The present invention relates to novel substituted thioimidazolidinone compounds and pharmaceutical compositions comprising such compounds for treatment of androgen receptor-associated diseases or disorders, such as prostate cancer, benign prostatic hypertrophy, male hair loss, muscle loss, acne and hirsutism.
Trimethylsilyl Trifluoromethanesulfonate as a Metal-Free, Homogeneous and Strong Lewis Acid Catalyst for Efficient One-Pot Synthesis of α-Aminonitriles and Their Fluorinated Analogues
One-pot three-component Strecker reaction of ketones/fluorinated ketones for the preparation of α-aminonitriles/fluorinated α-aminonitriles has been achieved using trimethylsilyl trifluoromethanesulfonate [(CH3)3SiOSO2CF3, TMSOTf)] as a metal-free strong Lewis acid catalyst. These reactions are simple and clean, giving the products in high yield and high purity. α-Aminonitriles and their fluorinated analogues are important classes of compounds, which show interesting pharmaceutical and biological properties. Presence of fluorine atom increases their biological activities significantly.
DIARYLHYDANTOIN COMPOUNDS AS ANDROGEN RECEPTOR ANTAGONISTS FOR TREATMENT OF CANCER
申请人:The Regents of the University of California
公开号:EP3106162A1
公开(公告)日:2016-12-21
The present invention relates to a particular diarylhydantoin compound acting by reducing the androgen-receptor(AR) activity. The compound is thus for use in treatment of diseases such as hormone refractory cancer, prostate cancer, benign prostate hyperplasia, breast cancer and ovarian cancer.