The complete assignment of the H-1 and C-13 NMR spectra of eight thien
yl-substituted chromenes was achieved by the concerted application of
homonuclear (gs-COSY), H-1-detected heteronuclear one-bond (gs-HMQC) a
nd long-range (gs-HMBC) gradient-selected correlation experiments. (C)
1998 John Wiley & Sons, Ltd.