A facile access to natural and unnatural dialkylsubstituted maleic anhydrides
摘要:
A facile new route to naturally occurring 2-carboxyetlyl-3-octylmaleic anhydride (1a) and unnatural dioctylmaleic anhydride (11) has been demonstrated via a chemoselective S(N)2' Grignard coupling reaction with dimethyl bromomethylfumate (3) followed by a chemoselective diethyl malonate/Grignard coupling reaction pathway. (C) 2002 Elsevier Science Ltd. All rights reserved.
the synthesis of natural and unnatural substituted maleicanhydrides based on the Barton radical decarboxylation is described. The radicals, generated by the photolysis of N-hydroxy-2-thiopyridone esters derived from succinic and alkyl acids reacted, respectively, with electron deficient olefin phenyl maleimide by a consecutive two-step radical addition, afforded the corresponding disubstituted maleic
Synthesis and biological evaluation of dialkylsubstituted maleic anhydrides as novel inhibitors of Cdc25 dual specificity phosphatases
作者:Laurent Brault、Mickaël Denancé、Estelle Banaszak、Souhayla El Maadidi、Eric Battaglia、Denyse Bagrel、Mohammad Samadi
DOI:10.1016/j.ejmech.2006.09.014
日期:2007.2
An efficient synthesis of dialkyl substituted maleic anhydrides 1a-j is described. The inhibitory potential of these original anhydride derivatives was tested toward the three human isoforms A, B and C of dual specific phosphatases Cdc25. A micromolar range inhibition of Cdc25s was observed with the maleic anhydrides bearing simple alkyl side chains longer than C-9, to reach the optimal activity with a C-17 chain length. (c) 2006 Elsevier Masson SAS. All rights reserved.