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

可碳化合物内含七个或七个以碳。

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

碳糖是一类呋喃或吡喃糖氧原子被亚甲基取代后形成糖类似物。