(S)-2'-hydroxy-3',4-dimethoxy-6-oxo-3,6-dihydro-[1,1'-biphenyl]-1(2H)-carbonitrile

(5aS,9aS)-4-methoxy-7-oxo-6,7,8,9-tetrahydrodibenzo[b,d]furan-9a(5aH)-carbonitrile

(4aS,9bS)-6-methoxy-1,2,4,4a-tetrahydro-9bH-spiro[dibenzo[b,d]furan-3,2'-[1,3]dioxolane]-9b-carbonitrile

(4aS,9bR)-6-methoxy-1,2,4,4a-tetrahydro-9bH-spiro[dibenzo[b,d]furan-3,2'-[1,3]dioxolane]-9b-carbaldehyde