First total synthesis of natural styryl-furone,(+)-7-epi-goniofufurone 1,from D-glycero-D-gulo-heptono-γ-lactone in eight steps(13%overall)is described.The abs
Synthetic studies on 4-demethyl-qinghaosu involving preparation of key intermediateolefin 5 and its photooxygenation were described. Experiment showed that rear
The equilibrium geometries,excitation energies,force constants and vibrational frequencies for the low-ly-ing electronic states X <sup>2</sup>B<sub>1</sub>,<sup