Caesanines A-D, New Cassane Diterpenes with Unprecedented N Bridge from Caesalpinia sappan

Faculty of Pharmacy

Assiut University

Caesanines A-D, New Cassane Diterpenes with Unprecedented N Bridge from Caesalpinia sappan

Research Authors
Jingyu Zhang, Wael M. Abdel-Mageed, Miaomiao Liu, Pei Huang, Wenni He, Li Li, Fuhang Song, Huanqin Dai, Xueting Liu, Jingyu Liang, Lixin Zhang
Research Department
Department of Pharmacognosy
Research Journal
Org. Lett., DOI: 10.1021/ol402058z
Research Rank
1
Research Vol
Vol. 15, No. 18
Research Year
2013
Research Member
Wael Mostafa Abdel-Mageed Mostafa
Research 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.