Rezanka Tomás, Sigler Karel
Institute of Microbiology, Prague, Czech Republic.
J Nat Prod. 2007 Sep;70(9):1487-91. doi: 10.1021/np070079m. Epub 2007 Sep 7.
Hirtusneanoside, a new O-deoxyglycoside of a dimeric tetrahydroxanthone, was isolated from the lichen Usnea hirta. Its structure, including the absolute configuration, was determined by means of extensive spectroscopic data (UV, IR, MS, CD, 1D and 2D NMR) and chemical degradation. Hirtusneanoside has a unique structure comprising L-rhamnopyranoside of a tetrahydroxanthone dimer and showed growth inhibitory activities against Gram-positive bacteria.
从地衣松萝中分离出了一种新的二聚四氢呫吨酮的O-脱氧糖苷——松萝新苷。通过广泛的光谱数据（紫外、红外、质谱、圆二色光谱、一维和二维核磁共振）和化学降解确定了其结构，包括绝对构型。松萝新苷具有独特的结构，由四氢呫吨酮二聚体的L-鼠李吡喃糖苷组成，并对革兰氏阳性菌具有生长抑制活性。
