Synthesis of optically active β-hydroxy-β-polyfluoromethyl GABAs
摘要:
A general synthetic route to polyfluoromethyl containing analogues of GABA-beta-hydroxy-beta-tri- and difluoromethyl GABAs 9a and 9b was developed, using the corresponding beta-alkoxyvinyl polyfluoromethyl ketones-enones 1a and 1b as starting materials. Both enantiomers of the potential biologically active compound 9a were obtained by chiral resolution with (R)- or (S)-phenylethylamine: (c) 2007 Elsevier Ltd. All rights reserved.
A new synthetic route to 3-polyfluoroalkyl-containing pyrroles
作者:Elena N. Shaitanova、Igor I. Gerus、Valery P. Kukhar
DOI:10.1016/j.tetlet.2007.12.048
日期:2008.2
A novel approach to 3-polyfluoroalkyl pyrroles is reported based on step by step reactions: 1,2-addition of Me3SiCN to β-alkoxyvinyl polyfluoroalkyl ketones, reduction with LiAlH4 and subsequent hydrolysis with intramolecularcyclization. The hydrolytic instability of various polyfluoroalkyl groups at position 3 of the pyrrole ring was evident and a pathway for the hydrolysis was proposed.
Synthesis of optically active β-hydroxy-β-polyfluoromethyl GABAs
作者:Elena N. Shaitanova、Igor I. Gerus、Michael Yu. Belik、Valery P. Kukhar
DOI:10.1016/j.tetasy.2007.01.005
日期:2007.2
A general synthetic route to polyfluoromethyl containing analogues of GABA-beta-hydroxy-beta-tri- and difluoromethyl GABAs 9a and 9b was developed, using the corresponding beta-alkoxyvinyl polyfluoromethyl ketones-enones 1a and 1b as starting materials. Both enantiomers of the potential biologically active compound 9a were obtained by chiral resolution with (R)- or (S)-phenylethylamine: (c) 2007 Elsevier Ltd. All rights reserved.