Conformation and Crystal Structure of Dipyrrinones with Oxindole Components
摘要:
Pyrrole alpha-aldehydes (2-formyl-4,5-dimethyl-1H-pyrrole and 2-formyl-N-methylpyrrole) condense readily at C(3) of indolin-2-ones to give dipyrrinone analogs, such as (3Z)-[(4,5-dimethyl-pyrrol-2-yl)-methylidenyl]-indolin-2-one and (3E)-[(1-methylpyrrol-2-yl)-methylidenyl]-indolin-2one. H-1-NMR NOE analyses and X-ray crystallography confirm the syn-(Z) configuration for the former and the syn-(E) configuration for the latter. The former is stabilized by intramolecular hydrogen bonding. Molecular mechanics calculations of the latter indicate no energy difference between the syn and anti conformations.
This invention relates to novel hybrid compounds, of formula 1 wherein R1 to R7, L and Y are as defined herein, wherein Y denotes a histone deacetylase inhibiting moiety (such as a heterocycle, hydroxamic acid or diamine) and L denotes a linker group the invention also relates to processes for preparing them and their use as therapeutic agents and diagnostic agents.
Conformation and Crystal Structure of Dipyrrinones with Oxindole Components
作者:Stefan E. Boiadjiev、David A. Lightner
DOI:10.1007/s00706-002-0542-3
日期:2003.3.1
Pyrrole alpha-aldehydes (2-formyl-4,5-dimethyl-1H-pyrrole and 2-formyl-N-methylpyrrole) condense readily at C(3) of indolin-2-ones to give dipyrrinone analogs, such as (3Z)-[(4,5-dimethyl-pyrrol-2-yl)-methylidenyl]-indolin-2-one and (3E)-[(1-methylpyrrol-2-yl)-methylidenyl]-indolin-2one. H-1-NMR NOE analyses and X-ray crystallography confirm the syn-(Z) configuration for the former and the syn-(E) configuration for the latter. The former is stabilized by intramolecular hydrogen bonding. Molecular mechanics calculations of the latter indicate no energy difference between the syn and anti conformations.