Three New Bibenzyl Derivatives from the Chinese Liverwort Marchantia polymorpha L.

From the Et2O extract of the Chinese liverwort Marchantia polymorpha L., three new bibenzyl (=1,1′‐(ethane‐1,2‐diyl)bisbenzene) derivatives, compounds 1–3, were obtained, together with the two known compounds marchantin J and perrottetin E. Their structures were established by NMR and HR‐EI‐MS analyses. Polymorphatin A (1) represents a new type of bis[bibenzyl] skeleton, and compound 3 is the first example of a bibenzyl oxidatively coupled to a phenylmethanol.