Progress toward Synthesis of Diazonamide A. Preparation of a 3-(Oxazol-5-yl)-4-trifluoromethylsulfonyloxyindole and Its Use in Biaryl Coupling Reactions
摘要:
The synthesis of a 3-oxazol-5-yl-indole-4-triflate is described, featuring a Scholkopf reaction to prepare the oxazole. In addition, the participation of this intermediate in biaryl coupling reactions toward the total synthesis of the natural product diazonamide A is presented.
Progress toward Synthesis of Diazonamide A. Preparation of a 3-(Oxazol-5-yl)-4-trifluoromethylsulfonyloxyindole and Its Use in Biaryl Coupling Reactions
作者:Edwin Vedejs、David A. Barda
DOI:10.1021/ol005548p
日期:2000.4.1
The synthesis of a 3-oxazol-5-yl-indole-4-triflate is described, featuring a Scholkopf reaction to prepare the oxazole. In addition, the participation of this intermediate in biaryl coupling reactions toward the total synthesis of the natural product diazonamide A is presented.
Stereoselective Synthesis of the Diazonamide A Macrocyclic Core
Stereoselective synthesis of the right-hand heteroaromatic macrocycle of diazonamide A features C16–C18 bond formation in the Suzuki–Miyaura cross-coupling and atropodiastereoselective Dieckmann-type macrocyclization as key steps. The Suzuki–Miyaura cross-coupling gave the best yields when it was catalyzed by a palladium–dioxygen complex.