cis-Clerodane diterpenoids from the Chinese liverwort Scapania parva Steph.

► Four new cis-clerodane diterpenoids, scapanialides A-C (1-3) and scaparvin F (4), were isolated from the Chinese liverwort Scapania parva Steph. ► Scapanialide B is the first cis-clerodane with a bicyclo[5.4.0]undecane skeleton from liverworts. ► The absolute structures of new compounds were determined by spectroscopic methods and TDDFT CD calculations.