Phytochemicals from medicinal plants are receiving ever greater
attention in the scientific literature, in medicine, and in the world
economy in general. For example, the global value of plant-derived
pharmaceuticals will reach $500 billion in the year 2000 in the OECD
countries. In the developing countries, over-the-counter remedies and
"ethical phytomedicines," which are standardized toxicologically and
clinically defined crude drugs, are seen as a promising low- cost
alternatives in primary health care. The field also has benefited
greatly in recent years from the interaction of the study of traditional
ethnobotanical knowledge and the application of modem phytochemical
analysis and biological activity studies to medicinal plants. The papers
on this topic assembled in the present volume were presented at the
annual meeting of the Phytochemical Society of North America, held in
Mexico City, August 15-19, 1994. This meeting location was chosen at the
time of entry of Mexico into the North American Free Trade Agreement as
another way to celebrate the closer ties between Mexico, the United
States, and Canada. The meeting site was the historic Calinda Geneve
Hotel in Mexico City, a most appropriate site to host a group of
phytochemists, since it was the address of Russel Marker. Marker lived
at the hotel, and his famous papers on steroidal saponins from Dioscorea
composita, which launched the birth control pill, bear the address of
the hotel.