作者:Susumi Hatakeyama、Mumen F. A. Amer、Keisuke Takahashi、Jun Ishihara
DOI:10.3987/com-06-s(k)44
日期:——
Formal Total Synthesis of (+)-Citrafungin A
作者:Sammi Tsegay、Helmut Hügel、Mark A. Rizzacasa
DOI:10.1071/ch09182
日期:——
inhibitor (+)-citrafungin A 1 is described. The key steps include a selective vinylanion addition of the anionderivedfrom iodide 10 to the lactone 9 and lactonization/selective deprotection of the allylic alcohols 8 and 23 to afford the citrafungin lactone. Esterification with the isocitrate 6 afforded citrafungin A tetra-t-butyl ester 5 which completed the formal total synthesis.
Citrafungins A and B, Two New Fungal Metabolite Inhibitors of GGTase I with Antifungal Activity
作者:Sheo B. Singh、Deborah L. Zink、George A. Doss、Jon D. Polishook、Carolyn Ruby、Elizabeth Register、Theresa M. Kelly、Cynthia Bonfiglio、Joanne M. Williamson、Rosemarie Kelly
DOI:10.1021/ol0361249
日期:2004.2.1
[structure: see text] Screening of naturalproducts extracts led to the discovery of citrafungins A and B, two new fungal metabolites of the alkylcitrate family that are inhibitors of GGTase I of various pathogenic fungal species with IC(50) values of 2.5-15 microM. These compounds exhibited antifungal activities with MIC values of 0.40-55 microM. The isolation, structure elucidation, relative and