期刊
JOURNAL OF COMBINATORIAL CHEMISTRY
卷 9, 期 6, 页码 1177-1187出版社
AMER CHEMICAL SOC
DOI: 10.1021/cc0700290
关键词
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Due to their diverse range of biological activities, imidazoheterocycles are recognized as privileged structures making these structural motifs attractive targets for library preparation-We report herein the synthesis of a sizable collection of imidazo[ 1,2-a] heterocycle scaffolds well-suited for divergent library preparation by virtue of amine functional handles with diverse positioning and connectivities. Partial reduction of imidazo[1,2-a]pyrazines to the tetrahydroimidazo[1,2-a]pyrazines and regiospecific Mannich-type bond formation at the C-3 of imidazo[1,2-a]pyridine under mild conditions achieved additional topological and connective diversity within the scaffold collection. Subsequent parallel reaction of the functionalized imidazoheterocycles with polystyrene-tetrafluorophenol esters and sulfonates produced a 7500 compound library in high purity.
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