The invention provides compounds of formula (I):
wherein the variables are defined in the specification, or a pharmaceutically-acceptable salt thereof, that are inhibitors of replication of the hepatitis C virus. The invention also provides pharmaceutical compositions comprising such compounds, methods of using such compounds to treat hepatitis C viral infections, and processes and intermediates useful for preparing such compounds.
[EN] COMPOUNDS THAT MEDIATE PROTEIN DEGRADATION AND METHODS OF USE THEREOF<br/>[FR] COMPOSÉS QUI ASSURENT LA MÉDIATION DE LA DÉGRADATION DE PROTÉINES ET LEURS PROCÉDÉS D'UTILISATION
申请人:MONTE ROSA THERAPEUTICS INC
公开号:WO2023069720A1
公开(公告)日:2023-04-27
Described herein, in part, are compounds that mediate the degradation of cyclin-dependent kinase 2 (CDK2), and are therefore useful in the treatment of various disorders, such as cancer.
Ring-Opening of (Cyclobutylmethyl)lithium and [(3-tert-Butyl-1-bicyclo[1.1.1]pentyl)methyl]lithium
作者:William F. Bailey、Eric R. Punzalan、Ernest W. Della、Dennis K. Taylor
DOI:10.1021/jo00107a005
日期:1995.1
The ring-opening of (cyclobutylmethyl)lithium (1) to 4-pentenyllithium (2) has been investigated in a solvent system composed of isooctane-dibutyl ether (3:2 by volume). The isomerization of 1 to 2, which is much more rapid than is cleavage of the corresponding Grignard reagent, is characterized by the following activation parameters: E(a) = 14.7 +/- 1.2 kcal/mol, ln A = 21.6 +/- 2.5; Delta H-double dagger = 14.2 +/- 1.2 kcal/mol, Delta S-double dagger = -17.3 +/- 5 eu. The two-step isomerization of [(3-tert-butyl-1-bicyclo[1.1.1]pentyl)methyl]lithium (5) to 4-tert-butyl-2-methylidene-4-pentenyllithium (7) via [(1-tert-butyl-3-methylidenecyclobutyl)methyl]lithium (6) in pentane-diethyl ether involves a very rapid initial ring-opening of 5 to 6 (t(1/2) < 15 min at -131 degrees C) followed by a slower isomerization of 6 to 7 (t(1/2) approximate to 24 min at -7.7 degrees C).