Stereoselective Nucleophilic Monofluoromethylation of N-(tert-Butanesulfinyl)imines with Fluoromethyl Phenyl Sulfone
摘要:
Highly stereoselective nucleophilic monofluoromethylation of (R)-(tert-butanesulfinyl)imines with fluoromethyl phenyl sulfone was achieved to afford alpha-monofluoromethylamines with a nonchelation-controlled stereoselectivity mode. By using the same chemistry, (R)-(tert-butanesulfinyl)imines bearing a terminal tosylate (M) group can be converted to alpha-monofluoromethylated cyclic secondary amines with high stereoselectivity.
Influence of HMPA on the Stereochemical Outcome of the Addition of a Racemic Allenylzinc onto Enantiopure N-tert-Butanesulfinimines: Stereoselective Access to Enantiopurecis-Ethynylaziridines
作者:Franck Ferreira、Max Audouin、Fabrice Chemla
DOI:10.1002/chem.200500268
日期:2005.9.5
presence of 60 equivalents of HMPA, the condensation of the racemicallenylzinc derived from 1-chloro-3-trimethylsilylpropyne ontoenantiopure non-alpha-branched N-tert-butanesulfinimines was proven to give access to the corresponding cis-ethynylaziridines as the major products. The good cis selectivity observed presumably resulted from a high kinetic resolution with the allenylzinc being partially configurationally
Provided are novel compounds of Formula (I):
pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof, which are useful in the treatment of diseases and disorders mediated by RORγ. Also provided are pharmaceutical compositions comprising the novel compounds of Formula (I) and methods for their use in treating one or more inflammatory, metabolic, autoimmune and other diseases or disorders.
Further Studies toward the Stereocontrolled Synthesis of Silicon-Containing Peptide Mimics
作者:Dácil Hernández、Karl B. Lindsay、Lone Nielsen、Tina Mittag、Klaus Bjerglund、Stig Friis、Rasmus Mose、Troels Skrydstrup
DOI:10.1021/jo100301n
日期:2010.5.21
Furtherstudies are reported on the utilization of the versatile reaction between chiral sulfinimines and alkyldiphenylsilyl lithium reagents with the goal of preparing a wide range of silanediol-based protease inhibitors. In particular, focus has been placed to demonstrate how a number of genetically encoded amino acid side chains such as serine, threonine, tyrosine, lysine, proline, arginine, aspartate
Asymmetric Synthesis of α,α-Difluoro-β-amino Acid Derivatives from Enantiomerically Pure <i>N-tert-</i>Butylsulfinimines
作者:Donnette D. Staas、Kelly L. Savage、Carl F. Homnick、Nancy N. Tsou、Richard G. Ball
DOI:10.1021/jo0259313
日期:2002.11.1
reagent derived from ethyl bromodifluoroacetate to alkyl- and aryl-substituted N-tert-butylsulfinimines furnishes beta-tert-butylsulfinamyl-beta-substituted alpha,alpha-difluoroproponiates in diastereomeric ratios ranging from 80:20 to 95:5. The diastereomers are easily separated and the enantiomerically pure, protected beta-amino esters are readily transformed to the corresponding acid, amide, and amine
ANDROGEN RECEPTOR MODULATORS AND METHODS FOR THEIR USE
申请人:British Columbia Cancer Agency Branch
公开号:US20150344424A1
公开(公告)日:2015-12-03
Compounds having a structure of Structure I:
or a pharmaceutically acceptable salt, tautomer or stereoisomer thereof, wherein R
1
, R
2
, R
3
, R
4
, R
6
, Y
1
and Y
2
are as defined herein, and wherein at least one of R
3
or R
4
is a straight-chain C
1
-C
6
haloalkyl, are provided. Uses of such compounds for treatment of various indications, including prostate cancer, as well as methods of treatment involving such compounds are also provided.