地衣是一种真菌与藻类的共生体,是广泛分布于世界各地.地衣可以产生很多初生和次生代谢物(地衣物质).地衣物质分为脂肪族地衣物质,......

A new naphthoquinone compound named 7-hydroxyl-8-methoxyltrypethelone 3 together with two known compounds trypethelone 1......