Total Syntheses of Arylindolizidine Alkaloids (+)-Ipalbidine and (+)-Antofine
摘要:
This paper presents the first application of two recently developed reactions to natural product synthesis. The first method involves a 6-endo-trig cyclization to prepare a versatile chiral enaminone building block. The second is a direct C-H arylation reaction. As a showcase for the utility of these methods, (+)-antofine and (+)-ipalbidine were synthesized in only 8 steps and 24-26% overall yields.
Total Syntheses of Arylindolizidine Alkaloids (+)-Ipalbidine and (+)-Antofine
摘要:
This paper presents the first application of two recently developed reactions to natural product synthesis. The first method involves a 6-endo-trig cyclization to prepare a versatile chiral enaminone building block. The second is a direct C-H arylation reaction. As a showcase for the utility of these methods, (+)-antofine and (+)-ipalbidine were synthesized in only 8 steps and 24-26% overall yields.
Total Syntheses of Arylindolizidine Alkaloids (+)-Ipalbidine and (+)-Antofine
作者:Micah J. Niphakis、Gunda I. Georg
DOI:10.1021/jo101051w
日期:2010.9.3
This paper presents the first application of two recently developed reactions to natural product synthesis. The first method involves a 6-endo-trig cyclization to prepare a versatile chiral enaminone building block. The second is a direct C-H arylation reaction. As a showcase for the utility of these methods, (+)-antofine and (+)-ipalbidine were synthesized in only 8 steps and 24-26% overall yields.