two‐photon cages and reveals surprising cooperative and topological effects. The interactions between the 2PA module and the caging moiety are found to promote cooperative effects on the 2PA response while additional processes that enhance the uncaging efficiency are operative in well‐oriented nitroindoline‐derived dyads. These synergic effects combine to lead to record two‐photon uncaging cross‐section
[EN] 7-NITROINDOLINE DERIVATIVES AND THEIR USES<br/>[FR] DERIVES DE 7-NITROINDOLINE ET LEURS UTILISATIONS
申请人:MEDICAL RES COUNCIL
公开号:WO2004085394A1
公开(公告)日:2004-10-07
7-nitroindoline compounds are disclosed that comprise a triplet sensitising group such as substituted or unsubstituted benzophenone group and can be used to cage effector species. In particular, the inclusion of a triplet sensitising group linked to the 4 or 5 position of a 7-nitroindoline derivative provides compounds which can be photolysed to release the effector species with unexpectedly enhanced photolysis efficiency. The triplet sensitising group may be linked directly to the 7-nitroindoline or via a spacer group. In some examples, the triplet sensitising group and/or the spacer group can be selected to enhance other properties of the caged compound such as its solubility, spectroscopic properties or stability (e.g. stability of the linkage between the nitroindoline moiety and the triplet sensitiser). This can help to improve the performance of the caged compound, especially in aqueous environments containing dissolved oxygen.
The present invention relates to photolabile or photoreleasable compounds including a caging moiety linked to an effector moiety, wherein the compounds are capable of releasing the effector moiety on irradiation, typically by flash irradiation with light. These compounds are particularly suitable for focal 2-photon uncaging The photoreleasable compounds can be used to deliver effector moieties such as carboxylic acids, preferably, neuroactive amino acids to sites where their activity is required. In preferred embodiments of the invention, the caging moiety is based on 4-carboxymethoxy-5,7-dinitroinlinyl and derivatives thereof.
Compositions de teinture des fibres kératiniques contenant des dérivés N-substitués de la 4-hydroxy indoline, et certains de ces dérivés
申请人:L'OREAL
公开号:EP0780118A1
公开(公告)日:1997-06-25
L'invention a pour objet une composition pour la teinture d'oxydation des fibres kératiniques contenant au moins un dérivé N-substitué de la 4-hydroxy indoline à titre de coupleur et au moins une base d'oxydation.
L'invention a également pour objet de nouveaux dérivés N-substitués de la 4-hydroxy indoline, leur procédé de synthèse, leur utilisation à titre de coupleurs pour la teinture d'oxydation des fibres kératiniques en association avec au moins une base d'oxydation, ainsi que les procédés de teinture les mettant en oeuvre.