Structure–activity relationship studies of acridones as potential antipsoriatic agents. 1. Synthesis and antiproliferative activity of simple N-unsubstituted 10H-acridin-9-ones against human keratinocyte growth
摘要:
A series of N-unsubstituted hydroxy-10H-acridin-9-ones were synthesized and evaluated for inhibitory action against HaCaT keratinocyte growth, in order to explore their potential as antipsoriatic agents. For structure activity relationship studies, the number and position of the hydroxyl groups were modified, the oxygen functions substituted or replaced, or additional functional groups were introduced into the acridone scaffold. 1,8-Dihydroxy-10H-acridin-9-one (4), which is an aza-analogue of the antipsoriatic anthralin, was only marginally active. However, 1,3-dihydroxy-substituted 5ee was the most potent acridone within this series and inhibited keratinocyte growth with an IC(50) value comparable to that of anthralin. In contrast to anthralin, nearly all members of the acridone series were devoid of radical generating properties, which were determined by their capability to interact with the free radical 2,2-diphenyl-1-picrylhydrazyl. Structures with a phenolic hydroxyl or an aromatic amine arranged ortho or para to the acridone NH group were exceptions. Also in contrast to anthralin, membrane-damaging effects as documented by the release of lactate dehydrogenase into the culture medium were not observed for acridones. (C) 2010 Elsevier Masson SAS. All rights reserved.
Novel azo, azide, and sulfenate photoactive compounds and methods using the compounds for photodiagnostic and/or phototherapeutic procedures. The compounds have the formula E-L-DYE-X—Y, wherein DYE is a photoactive component comprising a photoactive diagnostic agent, a photoactive type 1 agent, a photoactive type 2 agent, or a combination thereof;
Y is a photoactive component comprising a photoactive type 1 agent, a photoactive type 2 agent, or a combination thereof;
E is a targeting component for targeting the compound to an anatomical and/or physiological site of a patient;
L is a linking component for linking E to DYE; and
X is a linking component for linking DYE to Y.
US7235685B2
申请人:——
公开号:US7235685B2
公开(公告)日:2007-06-26
US7427657B1
申请人:——
公开号:US7427657B1
公开(公告)日:2008-09-23
US8658433B2
申请人:——
公开号:US8658433B2
公开(公告)日:2014-02-25
Structure–activity relationship studies of acridones as potential antipsoriatic agents. 1. Synthesis and antiproliferative activity of simple N-unsubstituted 10H-acridin-9-ones against human keratinocyte growth
A series of N-unsubstituted hydroxy-10H-acridin-9-ones were synthesized and evaluated for inhibitory action against HaCaT keratinocyte growth, in order to explore their potential as antipsoriatic agents. For structure activity relationship studies, the number and position of the hydroxyl groups were modified, the oxygen functions substituted or replaced, or additional functional groups were introduced into the acridone scaffold. 1,8-Dihydroxy-10H-acridin-9-one (4), which is an aza-analogue of the antipsoriatic anthralin, was only marginally active. However, 1,3-dihydroxy-substituted 5ee was the most potent acridone within this series and inhibited keratinocyte growth with an IC(50) value comparable to that of anthralin. In contrast to anthralin, nearly all members of the acridone series were devoid of radical generating properties, which were determined by their capability to interact with the free radical 2,2-diphenyl-1-picrylhydrazyl. Structures with a phenolic hydroxyl or an aromatic amine arranged ortho or para to the acridone NH group were exceptions. Also in contrast to anthralin, membrane-damaging effects as documented by the release of lactate dehydrogenase into the culture medium were not observed for acridones. (C) 2010 Elsevier Masson SAS. All rights reserved.