上游原料
Di(1H-imidazol-1-yl)methanethione; 1,1'-Thiocarbonyldiimidazole4-chlorophenyl (1R,9S,16R,18S)-16-(acetoxy)-17-oxa-8-azatetracyclo[7.7.2.0(1,18).0(2,7)]octadeca-2,4,6,12-tetraene-10,14-diyne-8-carboxylate4-chlorophenyl (1S,9S,16R,18S)-16-hydroxy-17-oxa-8-azatetracyclo[7.7.2.0(1,18).0(2,7)]octadeca-2,4,6,12-tetraene-10,14-diyne-8-carboxylate4-chlorophenyl (1R,9S,16R,18S)-16-[(1H-imidazol-1-ylcarbothioyl)oxy]-17-oxa-8-azatetracyclo[7.7.2.0(1,18).0(2,7)]octadeca-2,4,6,12-tetraene-10,14-diyne-8-carboxylate