Vinyl Isocyanates as Useful Building Blocks for Alkaloid Synthesis
摘要：
````Vinyl isocyanates are readily available, reactive functionalities that can serve as useful "1,4-dipole" equivalents in a wide-range of cyclization processes. Tn combination with various electron rich "1,2-dipoles" (i.e. enamines and enolates), they can deliver structurally elaborate six-membered nitrogen heterocycles suitable for conversion into a number of alkaloid targets including benzophenanthridines, phenanthridines as well as pyridone-derived systems. Reactions with "1,1-dipoles" (i.e. alkyl isocyanides and nucleophilic carbenes) afford highly functionalized pyrrolidine-based products that are amenable to further transformation into members of the amaryillidaceae, erythrina and stemona alkaloid families. [References: 49]
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DOI：
10.1055/s-2000-6430
被引量：
年份：
2000
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