I. Introduction gem-Dihalocyclopropanes play an important role in organic synthesis. They
are valuable substrates for the preparation of monohalocyclopropanes, cyclopropanes …

Covering: July 2001 to December 2002. Previous review: Nat. Prod. Rep., 2002, 19, 454This
review covers the isolation, biological activity and chemical synthesis of Amaryllidaceae …

A general and high yielding annulation strategy for the synthesis of various carbo-and
heterocycles, based on an intramolecular aryne ene reaction is described. It was found that …

The total synthesis of the Lycopodium alkaloid lyconadin A was accomplished and it was
applied to the total syntheses of the related congeners, lyconadins B and C. Lyconadin A …

This review provides an overview of the biological activities, natural occurrences, and the
silver tetrafluoroborate‐(AgBF4‐) mediated synthesis of proanthocyanidins, glycosides, N …

The metal-mediated formation of heterocycles is one of the most emerging and important
strategies in organic chemistry. The reactions utilized previously for the synthesis of …

Treatment of the anion derived from the ring-fused gem-dichlorocyclopropane 4c with silver
tetrafluoroborate afforded the spirocyclic compound 17 in 74% yield. Product 17 was readily …

Abstract ent‐Erythramine ((−)‐1), the enantiomer of the alkaloid erythramine, was prepared
in 15 steps from known compounds. The first of three pivotal bond‐forming steps in the …

Pyrroles and gem-dihalocyclopropanes are both readily accessible classes of compound.
They have considerable potential as building blocks in the construction of alkaloid …

The title alkaloids, often referred to collectively as crinines, are a prominent group of
structurally distinct natural products with additional members being reported on a regular …