The present disclosure provides novel macrocyclic peptides which inhibit the PD-1/PD-L1 and PD-L1/CD80 protein/protein interaction, and thus are useful for the amelioration of various diseases, including cancer and infectious diseases.
Tertiary carbinamines by addition of organocerium reagents to nitriles and ketimines
作者:Engelbert Ciganek
DOI:10.1021/jo00042a037
日期:1992.7
Organocerium reagents, prepared by reaction of aromatic and primary and secondary alkyllithium reagents with anhydrous cerium chloride, add to nitriles twice to give tertiary carbinamines in often excellent yields. Addition of n-BuCeCl2 to acetophenone is about 4 times faster than addition to benzonitrile. Only 1,2-diaddition is observed in the reaction of MeCeCl2 with cinnamonitrile. The species formed in the double addition of organocerium reagents to nitriles are sufficiently basic to generate a benzyne intermediate by abstraction of an aromatic proton and nucleophilic enough to undergo an intramolecular Chichibabin reaction. Reaction of N-unsubstituted ketimines or their lithium salts with organocerium reagents permits the synthesis of tertiary carbinamines with three different groups on the tertiary carbon center.
IMMUNOMODULATORS
申请人:BRISTOL-MYERS SQUIBB COMPANY
公开号:US20170283462A1
公开(公告)日:2017-10-05
The present disclosure provides novel macrocyclic peptides which inhibit the PD-1/PD-L1 and PD-L1/CD80 protein/protein interaction, and thus are useful for the amelioration of various diseases, including cancer and infectious diseases.
Vejdelek,Z.J. et al., Collection of Czechoslovak Chemical Communications, 1970, vol. 35, p. 2814 - 2830
作者:Vejdelek,Z.J. et al.
DOI:——
日期:——
Substituierte t-Hexylamine als neuer Typ hypotensiv wirksamer Verbindungen