“…Chemical shifts were recorded in ppm (δ) and the spectral data are consistent with the assigned structures. The spin multiplicities are indicated by the symbols s (singolet), d (doublet), t (triplet), q (quartet), m (multiplet), and bs (broad singolet).The synthesis of some compounds reported in this study, i.e., 17[26], 20[26], 21[26], 24[27], 28[27], 32[18], 33[29], and 46[30], has been previously described.…”