Abstract

Ten halogenated lunularins 16, 17, 26, 27, 30, 31, 36, 37, 42 and 43 as model substances for a new class of halometabolites isolated from bryophytes are prepared by chemical total syntheses according to a Wittig-protocol using halogenated aldehydes and phosphonium salts and/or by an in vitro halogenation of lunularin using potassium halide and hydrogen peroxide in the presence of a chloroperoxidase. The results confirm the need for a haloperoxidase in the in vitro chlorination of lunularin 6.

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