[F:1][C:2]1[CH:10]=[CH:9][CH:8]=[CH:7][C:3]=1[C:4]([OH:6])=O.[SH:11][CH2:12][CH:13]1[CH:18]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[CH2:17][O:16][C:14]1=[O:15].C1(P(N=[N+]=[N-])(C2C=CC=CC=2)=O)C=CC=CC=1.C(N(CC)CC)C>CN(C)C=O.C(OCC)C>[F:1][C:2]1[CH:10]=[CH:9][CH:8]=[CH:7][C:3]=1[C:4]([S:11][CH2:12][CH:13]1[CH:18]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[CH2:17][O:16][C:14]1=[O:15])=[O:6]To a solution of 1.2 g of o-fluorobenzoic acid and 1.5 g of α-mercaptomethyl-β-phenyl-γ-butyrolactone in 20 ml of dimethylformamide were added 1.9 ml of diphenylphosphoryl azide (DPPA) and then 1.2 ml of triethylamine under ice-cooling. Then, the mixture was raised to a room temperature and stirred for 18 hours. After completion of the reaciton, the reaction mixture was diluted with 200 ml of ethyl ether, washed with 5% hydrochloric acid, saturated aqueous sodium hydrogencarbonate, and saturated saline, dried over magnesium sulfate and the solvent was then distilled off. The crude product thus obtained was purified by a silica gel column chromatography to give 1.6 g (yield 67%) of the title compound.
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