Isolable carbocyclic compounds contain seven or fewer carbons in the cycle.

可分离环化合物环内含或。

Carbasugars,carbocyclic analogues of true sugars,are compounds in which the ring-oxygen of furanoid or pyranoid sugars is replaced by methylene group.

环糖是一类呋喃或吡喃糖环中氧原子被亚甲基取代后形成糖类似物。