Cobalt-Catalyzed Regioselective Olefin Isomerization Under Kinetic Control
作者:Xufang Liu、Wei Zhang、Yujie Wang、Ze-Xin Zhang、Lei Jiao、Qiang Liu
DOI:10.1021/jacs.8b01815
日期:2018.6.6
Olefin isomerization is a significant transformation in organic synthesis, which provides a convenient synthetic route for internal olefins and remote functionalization processes. The selectivity of an olefin isomerization process is often thermodynamically controlled. Thus, to achieve selectivity under kinetic control is very challenging. Herein, we report a novel cobalt-catalyzed regioselective olefin
Intramolecular carbonyl-ene reactions in the synthesis of peri-oxygenated hydroaromatics
作者:Shyam Basak、Dipakranjan Mal
DOI:10.1016/j.tet.2016.02.033
日期:2016.4
Suzuki coupling of 2-formylphenylboronic acids, are shown to provide cycloalkylidene ene products under acidic conditions. Susceptibility of the products to aromatization is manoeuvred by varying the reaction conditions and catalysts including binol-derived Brønsted acid catalysts. A peri-effect is identified as a controlling factor for the aromatizations. Several oxidative transformations of an ene product
Structural optimization of cyclic sulfonamide based novel HIV-1 protease inhibitors to picomolar affinities guided by X-ray crystallographic analysis
作者:Ashit K. Ganguly、Sesha S. Alluri、Chih-Hung Wang、Alyssa Antropow、Alex White、Danielle Caroccia、Dipshikha Biswas、Eunhee Kang、Li-Kang Zhang、Steven S. Carroll、Christine Burlein、John Fay、Peter Orth、Corey Strickland
DOI:10.1016/j.tet.2014.03.038
日期:2014.5
disclose the design of novelinhibitors 47 and 48 based on the X-ray structure of compound 5 bound to the HIV-1protease, their synthesis and activity against HIV-1protease. By making changes at the C4 position and the carbamate linkage the above compounds 47 and 48 were found to be approximately one hundred fold more active compared to 5 and their Ki values are in the picomolar range. An unusual observation
[EN] TRICYCLIC HETEROCYCLE COMPOUNDS USEFUL AS HIV INTEGRASE INHIBITORS<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES TRICYCLIQUES UTILES EN TANT QU'INHIBITEURS DE L'INTÉGRASE DU VIH
申请人:MERCK SHARP & DOHME
公开号:WO2019209667A1
公开(公告)日:2019-10-31
The present invention relates to Tricyclic Heterocycle Compounds of Formula (I): (I) and pharmaceutically acceptable salts or prodrug thereof, wherein R1, R2, R3, R4, R5, R6 and n are as defined herein. The present invention also relates to compositions comprising at least one Tricyclic Heterocycle Compound, and methods of using the Tricyclic Heterocycle Compounds for treating or preventing HIV infection in a subject.
highly efficient Pd/Xiang-Phos catalyzedenantioselective carboetherification of alkenyl oximes with either aryl or alkenyl halides, delivering various chiral 3,5-disubstituted and 3,5,5-trisubstituted isoxazolines in good yields with up to 97 % ee. The sterically bulky and electron-rich (S,Rs)-NMe-X2 ligand is responsible for the excellent reactivities and enantioselectivities. The salient features of this