Using the synthesis of the heterodimeric phloroglucinyl pyrone arzanol as a benchmark reaction, a carba-version of the Betti multicomponent reaction has been developed. Capitalizing on the fluorous activation of the phenolic component and the use of iminium ions as bivalent and "transmissive" aldehyde equivalents, the reaction has been used to colonize a biologically privileged but previously inaccessible
作者:Rudolf Hänsel、Eva-Maria Cybulski、Bayhan Çubukçu、Ali H. Meriçli、Ferdinand Bohlmann、Christa Zdero
DOI:10.1016/0031-9422(80)87030-0
日期:1980.1
Abstract The investigation of five further Helichrysum species afforded in addition to known compounds nine α-pyrone derivatives all also being phloroglucinol derivatives. Furthermore, a new toxol derivative has been isolated. The structures were elucidated by extensive NMR studies and by some chemical transformations. The chemotaxonomic situation is discussed briefly.