Download or read book The Enchanted Ring written by John C. Sheehan and published by MIT Press (MA). This book was released on 1984-03-01 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The laboratory synthesis of penicillin, with its intractable beta-lactam structure or "enchanted ring," proved to be one of the most difficult problems ever undertaken by organic chemists. In this book, John Sheehan the man who succeeded in synthesizing penicillin after others had given up, recounts the discovery and development of this remarkable drug.