Counter-current chromatography is an all-liquid technique that is finding increasing use in
separation problems, especially in the field of natural products. A broad selection of …

Liriodenine, an oxoaporphine-type alkaloid, widely exists in various forest plants as a non-
food bioactive natural product. It showed a great diversity of biological effects, such as …

Thin layer chromatography (TLC) is increasingly used in the fields of plant chemistry,
biochemistry, and molecular biology. Advantages such as speed, versatility, and low cost …

Essential oils extracted from the seeds of anise (Pimpinella anisum), dried fruits of
eucalyptus (Eucalyptus camaldulensis), dried foliage of mint (Mentha piperita) and basil …

ALKALOIDS OF THE MENISPERMACEAE Page 1 - CHAPTER l- ALKALOIDS OF THE
MENISPERMACEAE Jo& U BARBOSA-FILHO, Em10 VASCONC~LOS LEITAO DA-CUNM …

Publisher Summary This chapter presents chemotaxonomic compilation of protoberberine
alkaloids, 13 C NMR data of the protoberberine alkaloids and discusses biological activity of …

The isolation of natural products from plant or animal sources poses numerous problems.
The compounds being sought, biologically active or otherwise, may only be present in …

Recent innovations in liquid/liquid chromatographic techniques have led to a resurgence of
interest in their use for the separation of natural products. Commercially available …

An alkaloidal extract of the vines of Stephania japonica showed multidrug-resistance-
reversing activity as demonstrated by the bicinchoninic acid assay. Two known …

The applications of droplet countercurrent chromatography and centrifugal partition
chromatography (CPC) to the isolation and purification of natural products are described …