The North American stalked puffball Calostoma cinnabarinum (Boletales) owes its red-orange colour to the heptaene pigment calostomal. Its structure has been determined by 1H and 13C NMR spectroscopy of the corresponding methyl ester as all-trans-16-oxohexadeca-2,4,6,8,10,12,14- heptaenoic acid (1). Neither pulvinic acids nor other typical Boletales pigments could be detected in this fungus. The structural relationship of 1 to other polyene pigments from fungi is discussed.
北美洲的柄菌科红橙色柄球菌(Calostoma cinnabarinum)的颜色来自于七烯色素calostomal。通过对应的甲酯的1H和13C NMR光谱测定,其结构已被确定为全反式-16-氧代
十六碳二烯酸(1)。在这种真菌中,既未检测到褶酸,也未检测到其他典型的柄菌科色素。本文讨论了1与其他真菌中的多烯色素的结构关系。