Organic chemists have always been fascinated by the cyclopropane subunit. 1 The smallest
cycloalkane is found as a basic structural element in a wide range of naturally occurring …

The R-amino acids, which are usually formulated as H2NCH (R) CO2H despite their
zwitterionic nature, are by far the most important, numerous, and diverse family of the …

None of the naturally occurring amino acids containing a cyclopropyl group is proteinogenic,
but most of them bring about some interesting and important biological activity. This also …

The most recent papers describing the stereoselective synthesis of cyclic quaternary α-
amino acids are collected in this review. The diverse synthetic approaches are classified …

A highly enantioselective (up to 97.5% ee) and diastereoselective (95: 5 dr trans/cis) Cu (I)-
catalyzed cyclopropanation of alkenes using phenyliodonium ylide generated in situ from …

C-Functionalized morpholines are found in a variety of natural products and biologically
active compounds, but have also for other reasons been applied in organic synthesis. This …

A practical synthesis for the preparation of a diverse series of cyclopropane α-amino acids is
described. Nitrocyclopropane carboxylates can be readily prepared through treatment of α …

We describe diverse approaches to various dienes and their utilization in the Diels–Alder
reaction to produce a variety of polycycles. The dienes covered here are prepared by simple …

In this account several tools necessary for the synthesis of peptides from α-amino acids are
considered. Different strategies for the asymmetric synthesis of α-amino acids are studied …

Dehydroamino acids are versatile intermediates in organic synthesis and occur as frequent
structural motives in natural products and biologically active compounds. This review …