1228573-50-9Relevant academic research and scientific papers
NOVEL NEUROKININ 1 RECEPTOR ANTAGONIST COMPOUNDS
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, (2013/09/12)
The present invention relates to a compound according to formula (A) wherein n is 1 or 2; R1 and R2 are independently hydrogen, C1-4 alkyl, C1-4 haloalkyl, C1-4 alkoxy, CD3 or halogen; R3 is hydrogen, C(=O)OR7 or C1-4 alkyl optionally substituted with hyd
A quick synthesis of 1-arylpyrrolopyrazinones from linear alkynylamide derivatives
Pardo, Leticia M.,Tellitu, Imanol,Dominguez, Esther
experimental part, p. 971 - 978 (2010/05/18)
A rapid synthesis of pyrrolopyrazinone derivatives based on formal double addition across the triple bond of appropriately substituted substrates is presented. The key cyclization step features the formation, mediated by [bis(trifluoroacetoxy)iodo]benzene -(PIFA), of a 5-aroylpyrrolidinone nucleus from appropriately func-t-ionalized N-protected N-(aminoethyl)amides. After removal of the protecting group, the free amino group is used to accomplish a second heterocyclization process onto the newly formed carbonyl group. By appropriate manipulation of these protecting groups and selection of reaction conditions, a series of pyrrolopyrazinones can be obtained in different stages of hydrogenation. Georg Thieme Verlag Stuttgart · New York.
