Diastereoconvergent Negishi Cross-Coupling Using Functionalized Cyclohexylzinc Reagents
摘要:
Highly diastereoselective Pd-catalyzed cross-coupling reactions of functionalized 2-, 3-, and 4-substituted cyclohexylzinc reagents with aryl, heteroaryl, and alkenyl iodides have been performed under mild conditions. The use of Ruphos (2-dicyclohexylphosphino-2',6'-diisopropoxybiphenyl) as a ligand as well as LiCl and N-ethylpyrrolidone (NEP) as additives leads to especially high diastereoselectivities and displays good functional group tolerance. The stereoselectivity can be explained by assuming that the intermediate palladium moiety occupies an equatorial position of the cyclohexyl ring.
[EN] PYRROLO[2,3-F]INDAZOLE AND 2,4,5,10-TETRAZATRICYCLO[7.3.0.03,7]DODECA-1,3(7),5,8,11-PENTAENE DERIVATIVES AS ALPHA-1-ANTITRYPSIN MODULATORS FOR TREATING ALPHA-1-ANTITRYPSIN DEFICIENCY (AATD) [FR] DÉRIVÉS DE PYRROLO[2,3-F]INDAZOLE ET DE 2,4,5,10-TÉTRAZATRICYCLO[7.3.0.03,7]DODÉCA-1,3(7),5,8,11-PENTAÈNE EN TANT QUE MODULATEURS D'ALPHA-1-ANTITRYPSINE POUR TRAITER UNE DÉFICIENCE EN ALPHA-1-ANTITRYPSINE (AATD)
Selective transition-metal-free vicinal cis-dihydroxylation of saturated hydrocarbons
作者:Luis Bering、Andrey P. Antonchick
DOI:10.1039/c6sc03055f
日期:——
A transition-metal-free cis-dihydroxylation of saturated hydrocarbons under ambient reaction conditions has been developed. The described approach allows a direct and selective synthesis of vicinal diols. The new reaction thereby proceeds via radical iodination and a sequence of oxidation steps. A broad scope of one-pot dual C(sp3)–H bond functionalization for the selective synthesis of vicinal syn-diols
Cobalt‐Catalyzed Cross‐Coupling of Functionalized Alkylzinc Reagents with (Hetero)Aryl Halides
作者:Ferdinand H. Lutter、Lucie Grokenberger、Philipp Spieß、Jeffrey M. Hammann、Konstantin Karaghiosoff、Paul Knochel
DOI:10.1002/anie.201914490
日期:2020.3.27
A combination of 10 % CoCl2 and 20 % 2,2'-bipyridine ligands enables cross-coupling of functionalized primary and secondary alkylzinc reagents with various (hetero)arylhalides. Couplings with 1,3- and 1,4-substituted cycloalkylzinc reagents proceeded diastereoselectively leading to functionalized heterocycles with high diastereoselectivities of up to 98:2. Furthermore, alkynyl bromides react with
[EN] COMPOUNDS USEFUL FOR ALTERING THE LEVELS OF BILE ACIDS FOR THE TREATMENT OF DIABETES AND CARDIOMETABOLIC DISEASE<br/>[FR] COMPOSÉS UTILES POUR MODIFIER LES TAUX D'ACIDES BILIAIRES POUR LE TRAITEMENT DU DIABÈTE ET DE MALADIES CARDIOMÉTABOLIQUES.
申请人:MERCK SHARP & DOHME
公开号:WO2018034918A1
公开(公告)日:2018-02-22
Described herein are compounds of Formula (I) or a pharmaceutically acceptable salt thereof. The compounds of Formula I act as Cyp8b1 inhibitors and can be useful in preventing, treating or acting as a remedial agent for diabetes and cardiovascular disease.
A compound having the structure (I) wherein R is selected from the group consisting of 1) and 2), or a pharmaceutically acceptable salt thereof, and methods of using the compounds for treating hypertension.
This invention relates to novel 1-hydroxyimino-3-phenyl-propanes of the formula (I) wherein R1 to R10 are as defined in the description and in the claims, as well as pharmaceutically acceptable salts thereof. These compounds are GPBAR1 agonists and may be used as medicaments for the treatment of diseases such as type II diabetes.