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The single-step synthesis of protected fucols and unnatural polyaryls by biomimetic oxidative cross-coupling between phenolic components and 1,3,5-trimethoxybenzene catalyzed by FeCl3 in fluorinated solvents is reported. The regioselectivity (ortho, meta or para) and the chemoselectivity (CC vs CO) in this highly efficient transformation are controlled by the phenolic ortho-groups of the growing phenolic...
Asmarines are marine alkaloids, with a unique tetrahydro[1,4]diazepino-[1,2,3-g,h]purine (THDAP) structure and interesting biological properties. Three synthetic approaches were employed for the preparation of the THDAP system. Several N-9, of the purine, protecting groups were investigated. 15 N-Chemical shifts measured from 15 NH HMBC experiments for several compounds,...
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