methyl (4R,6S,9S)-9-tert-butyl-8,11-dioxo-3,12-dioxa-7,10,22-triaza-tricyclo[16.3.1.14,7]tricosa-1(21),16,18(22),19-tetraene-6-carboxylate 在
钯 作用下,
以
乙醇 为溶剂,
反应 18.0h,
以methyl (4R,6S,9S)-9-t-butyl-8,11-dioxo-3,12-dioxa-7,10,22-triazatricyclo[16.3.1.14,7]tricosa-1(22), 18,20-triene-6-carboxylate was formed along with the title compound in ˜1.5:1 ratio的产率得到methyl (4R,6S,9S)-9-tert-butyl-8,11-dioxo-3,12-dioxa-7,10,22-triaza-tricyclo[16.3.1.1
4,7]tricosa-1(21),18(22),19-triene-6-carboxylate