Selective and potent monoamine oxidase type B inhibitors: substituted semicarbazones and acylhydrazones of aromatic aldehydes and ketones
摘要:
The synthesis and the evaluation of the monoamine oxidase A and B inhibitory activities of 21 new substituted acylhydrazones of various aromatic aldehydes and 4-(benzyloxy)acetophenone, and four substituted semicarbazones of benzaldehyde and 4-(benzyloxy)benzaldehyde, are described. The 4-(benzyloxy)phenyl group contributing to a high lipophilicity led to the most active compounds. One of these, compound 3g (IC50 = 3 nM, MAO A/MAO B selectivity > 33 000), was found to act as a reversible and probably tight-binding inhibitor. The studied acyclic hydrazones and semicarbazones are structurally related to other reversible and potent inhibitors, eg, heterocyclic compounds such as 1,3,4-oxadiazol-2(3H)-one derivatives in which the hydrazono group is intracyclic. Some of these new inhibitors might find use in the symptomatic treatment of neurodegenerative processes.
Monoamine oxidase B inhibitors, processes for their preparation and use
申请人:Laboratoires Mayoly Spindler
公开号:US05811456A1
公开(公告)日:1998-09-22
Novel monoamine oxidase B inhibitors of formula (I), wherein R.sub.1 .dbd.H, an optionally substituted benzyloxy or phenylethoxy group; p=0-3; R.sub.3 .dbd.H, a CN, OH, CCH group, a C.sub.1 -C.sub.3 alkoxy-carbonyl group, or a C.sub.1 -C.sub.3 alkylated cyanomethyl group; R.sub.2 .dbd.H or a C.sub.1 -C.sub.3 alkyl group; n=0 or 1; if n=0, R.sub.4 is a C.sub.1 -C.sub.3 alkyl group or a C.sub.1 -C.sub.3 alkoxy group, while if n=1, y=1 and R.sub.4 is a C.sub.1 -C.sub.3 alkyl group, a C.sub.1 -C.sub.3 alkoxy group or a phenyl group. The invention also concerns processes for the preparation of said novel inhibitors and the therapeutic use thereof. ##STR1##
Selective and potent monoamine oxidase type B inhibitors: substituted semicarbazones and acylhydrazones of aromatic aldehydes and ketones
作者:S Bernard、C Paillat、T Oddos、M Seman、R Milcent
DOI:10.1016/0223-5234(96)88258-4
日期:1995.1
The synthesis and the evaluation of the monoamine oxidase A and B inhibitory activities of 21 new substituted acylhydrazones of various aromatic aldehydes and 4-(benzyloxy)acetophenone, and four substituted semicarbazones of benzaldehyde and 4-(benzyloxy)benzaldehyde, are described. The 4-(benzyloxy)phenyl group contributing to a high lipophilicity led to the most active compounds. One of these, compound 3g (IC50 = 3 nM, MAO A/MAO B selectivity > 33 000), was found to act as a reversible and probably tight-binding inhibitor. The studied acyclic hydrazones and semicarbazones are structurally related to other reversible and potent inhibitors, eg, heterocyclic compounds such as 1,3,4-oxadiazol-2(3H)-one derivatives in which the hydrazono group is intracyclic. Some of these new inhibitors might find use in the symptomatic treatment of neurodegenerative processes.