Hygrocins A and B, Naphthoquinone Macrolides from <i>Streptomyces </i><i>h</i><i>ygroscopicus</i>
作者:Ping Cai、Fangming Kong、Mark E. Ruppen、Greg Glasier、Guy T. Carter
DOI:10.1021/np050272l
日期:2005.12.1
(C-22), which undergoes intramolecular aldol condensation with the quinone ring to yield a gamma-lactam derivative, 6. Its structural elucidation was achieved by chemical conversion to 3, an unusual diazomethane derivative, and confirmed by its alkalinehydrolysis product 4, hydrogenation derivative 5, and "degradation" product 6. The structure of hygrocin B was determined by combined chemical and spectroscopic