Ruthenium Carbene Complexes with Imidazol-2-ylidene Ligands: Syntheses of Conduritol Derivatives Reveals Superior RCM Activity
作者:Lutz Ackermann、David El Tom、Alois Fürstner
DOI:10.1016/s0040-4020(99)01102-3
日期:2000.4
Syntheses of conduritol A, E and F derivatives are described using galactitol, d-mannitol and d-glucitol, respectively, as the starting materials. The key steps of this approach comprise a Tebbe olefination reaction for the preparation of dienes 15, 21 and 27 followed by ring closing metathesis (RCM) for the formation of the polyhydroxylated cyclohexene rings of the targets. A comparative study shows
A straightforward synthesis of perbenzylated conduritols from alditols by ring closing olefin metathesis
作者:John K. Gallos、Theocharis V. Koftis、Vassiliki C. Sarli、Konstantinos E. Litinas
DOI:10.1039/a906626h
日期:——
The synthesis of perbenzylated conduritols A, E and F has been achieved in six steps by formal conversion of galactitol, D-mannitol and D-glucitol into the respective terminal dienes, followed by ring closing olefin metathesis.