This volume reviews recent advances in five important areas of medicinal chemistry which will be of interest both to chemists and to scientists of other disciplines engaged in medicines research and development. Included are accounts of successful drug discovery programmes, disease targets of unmet medical need, and recent progress in new technologies which are considered by many to hold the key to future developments in medicinal chemistry.The style and organisation of chapters follow a similar pattern to previous volumes but references, where appropriate, now include website addresses of the World Wide Web.