上游原料
methyl (15S,16R,18R)-16-hydroxy-15-methyl-3-oxo-28-oxa-4,14,19-triazaoctacyclo[12.11.2.1(15,18).0(2,6).0(7,27).0(8,13).0(19,26).0(20,25)]octacosa-1,6,8,10,12,20,22,24,26-nonaene-16-carboxylatemethyl (15S,16R,18R)-4-[tert-butyl(dimethyl)silyl]-16-hydroxy-15-methyl-3-oxo-28-oxa-4,14,19-triazaoctacyclo[12.11.2.1(15,18).0(2,6).0(7,27).0(8,13).0(19,26).0(20,25)]octacosa-1,6,8,10,12,20,22,24,26-nonaene-16-carboxylatemethyl (15S,16R,18R)-4-[tert-butyl(dimethyl)silyl]-16-methoxy-15-methyl-3-oxo-28-oxa-4,14,19-triazaoctacyclo[12.11.2.1(15,18).0(2,6).0(7,27).0(8,13).0(19,26).0(20,25)]octacosa-1,6,8,10,12,20,22,24,26-nonaene-16-carboxylatemethyl (15S,16R,18R)-16-methoxy-15-methyl-3-oxo-28-oxa-4,14,19-triazaoctacyclo[12.11.2.1(15,18).0(2,6).0(7,27).0(8,13).0(19,26).0(20,25)]octacosa-1,6,8,10,12,20,22,24,26-nonaene-16-carboxylate
