Three different radical reactions were used in a short total synthesis of (±)-matrine (1). Two of the four six-membered rings and four new bonds were created in one radical cascade involving intermolecular addition followed by two successive cyclizations and transfer of a xanthate group.
Keywords: Cyclizations; Domino reactions; Matrine; Natural products; Radical reactions.
© 1998 WILEY-VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany.