作者:Jeffrey W. Bode、Donald R. Gauthier Jr.、Erick M. Carreira
DOI:10.1039/b107995f
日期:2001.12.19
The titanium fluoride-BINOL catalyzed asymmetric allylsilylation of alpha,alpha -disubstituted aldehydes provides facile access to highly functionalized, chiral building blocks, which following simple recrystallization affords a key versatile starting material for polyketide synthesis in 96% ee.
Stereoselective Syntheses of Epothilones A and B via Nitrile Oxide Cycloadditions and Related Studies
作者:Jeffrey W. Bode、Erick M. Carreira
DOI:10.1021/jo015791h
日期:2001.9.1
epothilones A and B are described. The routes described make extensive study of nitrileoxide cycloadditions as surrogates for aldoladdition reactions and have led to the realization of a highly convergent synthesis based on the Kanemasa hydroxyl-directed nitrileoxide cycloaddition. As well, our synthetic efforts have led to the development of new reaction methodologies and served as the proving ground for