Synthesis of enantiopure 4-amino-3-hydroxymethyl-tetrahydroquinolines via an intramolecular nitrone cycloaddition
摘要:
Enantiopure 4-amiiio-3-hydroxymethyl-1,2,3,4-tetrahydroquinolines are synthesized by using an intramolecular cycloaddition of chiral nitrones prepared from aldehydes 5 and (R)-alpha-(hydroxym ethyl)benzylhydroxylamine. Reaction times of the nitrone cycloaddition were optimized by activation under MW-assisted conditions. The absolute configuration of the products was determined by X-ray analysis. (c) 2007 Elsevier Ltd. All rights reserved.
Synthesis of enantiopure 4-amino-3-hydroxymethyl-tetrahydroquinolines via an intramolecular nitrone cycloaddition
摘要:
Enantiopure 4-amiiio-3-hydroxymethyl-1,2,3,4-tetrahydroquinolines are synthesized by using an intramolecular cycloaddition of chiral nitrones prepared from aldehydes 5 and (R)-alpha-(hydroxym ethyl)benzylhydroxylamine. Reaction times of the nitrone cycloaddition were optimized by activation under MW-assisted conditions. The absolute configuration of the products was determined by X-ray analysis. (c) 2007 Elsevier Ltd. All rights reserved.
The disclosed pyrimidine derivatives, and pharmaceutically acceptable salts thereof, exhibit useful pharmacological properties, in particular use as 5HT.sub.2C - antagonists. The invention is also directed to formulations and methods for treatment.
N-Phenylcarbamates of the formula:
are useful as fungicidal agents against phytophatogenic fungi, particularly their strains resistant to benzimidazole thiophanate fungicides and/or cyclic imide fungicides.