“…The following compounds characterized by 1 H, 13 C NMR spectroscopy and mass spectrometry are known within the literature: biphenyl 4a [52], 4-methylbiphenyl 4b [45], 4 -formylbiphenyl 4c [53], 4-chlorobiphenyl 4d [46] 4-acetylbiphenyl 4e [54], 4-acetyl-4 -methylbiphenyl 4f [55], 4-acetyl-4 -formylbiphenyl 4g [56], 4-acetyl-4 -chlorobiphenyl 4h [57], 4-nitrobiphenyl 4i [58], 4-nitro-4 -methylbiphenyl 4j [59], 4 -nitro-biphenyl-4-carbaldehyde 4k [60], 4-nitro-4 -chlorobiphenyl 4l [61], 2-methoxybiphenyl 4m [62], 3-(2-methoxyphenyl)thiophene 4n [63], 2-methoxy-trans-stilbene 4o [64], 2-methoxycarbonylbiphenyl 4p [65], 3-(2-methoxycarbonylphenyl)thiophene 4q [66], 2-methoxycarbonyl-trans-stilbene 4r [67], 2,6-dimethylbiphenyl 4s [68], 2,6-dimethyl-4 -methylbiphenyl 4t [42], 2,6-dimethyl-4 -formylbiphenyl 4u [42], 2,6-dimethyl-4 -chlorobiphenyl 4v [69], 4-bromo-6-methyl-2-pyrone 2h [48], 4-phenyl-6-methyl-2-pyrone 4w, 4-(4 -methylphenyl)-6-methyl-2-pyrone 4x [48], 4-(4 -formylphenyl)-6-methyl-2-pyrone 4y [48], 4-(4 -chlorophenyl)-6-methyl-2-pyrone 4z [48], 4-(2 -phenyl-trans-ethenyl)-6-methyl-2-pyrone 4ab [48]. …”