Mosses are seldom fed upon even in areas where intense herbivore pressure is observed on other plants. But even more than 100 years after the first investigations of Ernst Stahl on the chemical defense of plants and mosses against slugs and snails [1] we know very little about the nature and biosynthesis of metabolites responsible for moss chemical defense.[2, 3] Dicranum scoparium is an example of a well-defended moss; it is globally distributed in ...
![4-[7-carboxyheptyl(1)]-5-pent-2-en-yl(1)-cyclopent-2-en-1-one Structure](https://image.chemsrc.com/caspic/267/507442-79-7.png)
