(–)-Quinic acid in organic synthesis. Part 4. Syntheses of cyclophellitol and its (1R, 6S)-, (2S)-, (1R, 2S, 6S)-diastereoisomers
作者:Tony K. M. Shing、Vincent W.-F. Tai
DOI:10.1039/p19940002017
日期:——
Cyclophellitol 1 and its (1R, 6S)-, (2S)-, (1R, 2S, 6S)-diastereoisomers 2, 3 and 4 are constructed from quinic acid involving the following key steps: regioselective cyclic sulfate ring opening, regiospecific oxidative elimination and an epoxidation. Diastereoisomers 1, 2, 3 and 4 are characterized as their corresponding tetraacetates 5, 6, 7 and 8.
Facile syntheses of cyclopnellitol and its (1R,6S)-, (1R,2S,6S)-, (2S)-diastereoisomers from (–)-quinic acid
作者:Tony K. M. Shing、Vincent W.-F. Tai
DOI:10.1039/c39930000995
日期:——
Cyclophellitol and its (1R,6S)-, (1R,2S,6S)-, (2S)-diastereoisomers are constructed from quinic acid involving a regioselective cyclic sulfate ring opening reaction, a regiospecific oxidative elimination, and an epoxidation reaction.