Several phytotoxic metabolites, including a novel compound chaetoglobosin O, were isolated from Cylindrocladium floridanum Sobers et Seymore. The structure of chaetoglobosin O, including its absolute configuration, was determined by a spectroscopic analysis and chemical correlation. Purified chaetoglobosins A, C, and O showed potent growth-inhibition activity against alfalfa seedlings.
                                    从圆筒孢属真菌(Cylindrocladium floridanum Sobers et Seymore)中分离出多种植物毒性代谢产物,包括一种新型化合物chaetoglobosin O。通过光谱分析和
化学相关性确定了chaetoglobosin O的结构,包括其绝对构型。纯化的chaetoglobosins A、C和O对紫花苜蓿幼苗显示出强大的生长抑制活性。