Asymmetrically modified zeolite as a medium for enantioselective photoreactions: Reactions from spin forbidden excited states
摘要:
Moderate enantioslectivity has been achieved on two photochemical reactions that involve molecules reacting from spin forbidden excited states. Zeolite is found to be a unique medium in this context. (C) 1997 Elsevier Science Ltd.
The present invention provides compounds of Formula I,
1
including pharmaceutically acceptable salts and/or prodrugs thereof, where G, R
2
, and R
3
are defined as described herein.
本发明提供了公式I的化合物,包括其药学上可接受的盐和/或前药,其中G、R2和R3的定义如本文所述。
Access to Optically Pure Benzosultams by Superelectrophilic Activation
N-(arenesulfonyl)-aminoalcohols derivedfrom readily available ephedrines or amino acids undergo an intramolecular Friedel–Crafts reaction to afford enantiopure benzosultams bearing two adjacent stereocenters in high yields with fully controlled diastereoselectivity. Low-temperature NMR spectroscopy demonstrated the crucial role played by the conformationally restricted chiral dicationic intermediates.
N-phenethylic ephedrine derivatives were prepared in a one-pot procedure starting from the two enantiomers of ephedrine using the Potier reagent, and a polyfunctional aryl- or benzylic organozinc halide. The biological activity in indatraline MS Binding Assays addressing hDAT, hNET and hSERT was determined and discussed. A range of N-benzylic and N-phenethylic ephedrine derivatives were prepared in a one-pot
Drug substances comprising a amine containing pharmaceutically active compound, and at least one of an alditol acetal and an aromatic organic acid as an addition salt or an additive.