With use of the NMR databases in achiral and chiral solvents, the complete stereochemistry of tetrafibricin (1) has been elucidated without degradation of the carbon framework.
Enantio- and Diastereoselective Synthesis of <i>N</i>-Acetyl Dihydrotetrafibricin Methyl Ester
作者:Philippe Nuhant、William R. Roush
DOI:10.1021/ja401918r
日期:2013.4.10
methyl ester (34) is described. The synthesis features three enantioselective double allylborationreactions and an intramolecular hydrosilylation/Fleming-Tamao oxidation sequence to establish seven of the hydroxy-bearing stereocenters of 34. Especially noteworthy is the fragment-assembly double allyboration reaction of 2 and 7 using reagent 3, which provides the advanced intermediate 6 with >20:1 diastereoselectivity
作者:Yoshihisa Kobayashi、Werngard Czechtizky、Yoshito Kishi
DOI:10.1021/ol0272895
日期:2003.1.1
With use of the NMR databases in achiral and chiral solvents, the complete stereochemistry of tetrafibricin (1) has been elucidated without degradation of the carbon framework.