1-(2,4,6-Triisopropylphenyl)ethylamine: A New Chiral Auxiliary for the Asymmetric Synthesis of γ-Amino Acid Derivatives
作者:Pascale Cividino、Sandrine Py、Philippe Delair、Andrew E. Greene
DOI:10.1021/jo061976i
日期:2007.1.1
The title compound has proven to be an excellent chiral auxiliary for nitrones in SmI2-mediated reductive coupling with α,β-unsaturated esters. A variety of such nitrones, prepared from aldehydes and enantiopure N-hydroxy-1-(2,4,6-triisopropylphenyl)ethylamine, afforded γ-N-hydroxyamino esters in high yields and diastereomeric purity. These adducts, readily available as either enantiomer, could be
Comparison of the DNA cleavage activity of man-designed bleomycins demonstrates that belomycins are small enzymes comprised of a catalytic site and a binding site. The linker moiety is shown to be significant for DNA binding, and inversion of its stereochemistry results in a dramatic decrease in the DNA-cleaving efficiency. One of the man-designed BLMs shows excellent cytotoxicity against L1210.
Provided herein are compounds of Formula (I), or pharmaceutically acceptable salts thereof, pharmaceutical compositions that include a compound described herein (including pharmaceutically acceptable salts of a compound described herein) and methods of synthesizing the same. Also provided herein are methods of treating diseases and/or conditions with a compound of Formula (I), or a pharmaceutically acceptable salt thereof.