Umsetzung von vinylogen Formamidinium‐Salzen mit Nucleophilen. I Eine Variante der Pyrimidin‐Synthese
作者:Rudolf M. Wagner、Christian Jutz
DOI:10.1002/cber.19711041002
日期:1971.10
Die Einwirkung von Amidin- bzw. Guanidinbasen 2 auf verschiedene Bis-dimethylamino-trimethinium-Salze 1 führt unter Abspaltung von Dimethylamin in Ausbeuten von 62–97% zu substituierten Pyrimidinen 3.
Lewis-Acid-Catalyzed Regioselective Construction of Diversely Functionalized Polycyclic Fused Furans
作者:Sana Jamshaid、Yong Rok Lee
DOI:10.1021/acs.orglett.2c00019
日期:2022.2.18
A novel, facile, and efficient Lewis-acid-catalyzed [4 + 1] annulation protocol for the construction of functionalized polycyclic-fused furans is developed. This methodology is free of transition metals and ligands and provides a rapid synthetic route to divergently orientated polycyclic furans in good yields. In addition, this protocol can also be used to synthesize multisubstituted furans.
A facile route to pyrroles, isoindoles and hetero fused analogues
作者:Christopher D. Gabbutt、John D. Hepworth、B. Mark Heron、Samantha L. Pugh
DOI:10.1039/b209255g
日期:2002.12.19
Enamino acids derived from 1,2-dimethylaminomethylene- or 1,2-hydroxymethylene-carbonyl compounds and amino acids undergo a decarboxylative cyclisation to pyrroles, isoindoles and other fused pyrroles. A two atom ring expansion occurs preferentially with enamino acids from cyclohexane-1,3-diones and α-alkyl-α-amino acids leading to oxocino[2,3-c]pyrroles.
Fused polycyclic 2-aminopyrimidines of formula (1):
wherein
Ar is an optionally substituted aromatic or heteroaromatic group;
X is a carbon or nitrogen atom;
Y is a carbon or nitrogen atom;
Z is a linker group;
A together with X and Y forms an optionally substituted monocyclic or bicyclic aromatic or heteroaromatic group;
and the salts, solvates, hydrates and N-oxides thereof are described. The compounds are potent and selective inhibitors of the protein tyrosine kinases p56lck and p59fyn and are of use in the prophylaxis and treatment of immune diseases, hyperproliferative disorders and other diseases in which inappropriate p56lck and/or p59fyn activity is believed to have a role.