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Title: Caesanines A-D, new cassane diterpenes with unprecedented N bridge from Caesalpinia sappan. Author: Zhang J, Abdel-Mageed WM, Liu M, Huang P, He W, Li L, Song F, Dai H, Liu X, Liang J, Zhang L. Journal: Org Lett; 2013 Sep 20; 15(18):4726-9. PubMed ID: 24004304. Abstract: Serial antibacterial furanoditerpenes caesanines A-D (1-4), possessing a cassane-type diterpenoid skeleton with an unusual N bridge between C-19/C-20, were identified from a Chinese herb Caesalpinia sappan Linn. In addition, caesanine D (4) showed the first class of dicassane diterpenoid ethers. Their structures were determined by different spectroscopic methods and ECD calculation. Caesanines A and B exhibited strong activities against MRSA suggesting a promising entry point for the development of anti-infective drugs.[Abstract] [Full Text] [Related] [New Search]