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We report a convenient short synthesis of tricyclic guanidine‐containing natural products model featuring four‐component reaction between 2,5‐dimethoxytetrahydrofuran, 2‐aminopyrimidine and two acylacetic or benzoylacetic acids. A synthetic route combining the Robinson–Schöepf bioinspired strategy and biomechanistic analysis of the crambescidin and batzelladine alkaloids family. An application of...
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