Polyamino acids functionalized by hydrophobic grafts bearing an anionic charge and applications thereof, such as therapeutic applications
申请人:Breyne Olivier
公开号:US20100098656A1
公开(公告)日:2010-04-22
The present invention relates to novel materials based on biodegradable polyamino acids that are useful especially for the vectorization of active principle(s) (AP). The invention further relates to novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on these polyamino acids. The object of the invention is to provide a novel polymer starting material that is capable of being used for the vectorization of AP and makes it possible on the one hand to achieve high polymer/AP ratios, and on the other hand optimally to satisfy all the specifications required in the case in point: biocompatibility, biodegradability, ability to associate easily with numerous active principles or to solubilize them, and ability to release these active principles in vivo. This object is achieved by the present invention, which relates first and foremost to linear polyamino acids comprising aspartic units or glutamic units and having hydrophobic grafts comprising hydrophobic groups containing from 8 to 30 carbon atoms, at least one of these hydrophobic grafts having at least one anionic charge and/or one or more mutually identical or different ionizable groups each capable of giving rise to at least one anionic charge. These polymers are amphiphilic and anionic and are capable of being converted easily and economically to particles for the vectorization of active principles, these particles themselves being capable of forming stable aqueous colloidal suspensions.
Polyglutamic Acids Functionalised by Histidine Derivatives and Hydrophobic Groups and the Uses Thereof, in Particular for Therapeutic Purposes
申请人:Soula Olivier
公开号:US20100034886A1
公开(公告)日:2010-02-11
The invention relates to novel biodegradable materials based on modified polyamino acids and suitable, in particular, for vectoring active substance(s) (AS). Said invention also relates to novel pharmaceutical, cosmetic, dietary or plant protective compositions which are based on said polyamino acids.
The aim of said invention is to provide a novel polymer raw material usable for vectoring the AS and capable to optimally meet all specification in this area: biocompatibility, biodegradability, ability to become easily associated with many active substances or to solubilise them and to release said active substances in vivo. The aim is attained to 30 carbon atoms.
Said polyglutamates modified by histidine derivatives are soluble with pH lower than 5 and are easily and economically convertible into active substance vectorization particles which are able to form stable aqueous colloidal suspensions. On the contrary, said modified polyglutamates are insoluble in water with a physiological pH (7.4), and thereby have to be precipitated on an injection site in the case of a subcutaneous injection.
COPOLYHYDROXYALKYLGLUTAMINES FUNCTIONALISED WITH HYDROPHOBIC GROUPS, AND USES THEREOF, ESPECIALLY IN THERAPEUTICS
申请人:Soula Rémi
公开号:US20110044930A1
公开(公告)日:2011-02-24
The invention relates to novel biodegradable materials which are based on modified polyamino acids and which can be used for the vectorisation of active principle(s) (AP). The invention also relates to novel pharmaceutical, cosmetic, dietary or phytosanitary compositions based on said polyamino acids. The aim of the invention is to provide a novel polymer raw material which can be used for the vectorisation of active principles and which can optimally fulfil all required specifications in said area, namely: biocompatibility, biodegradability and the ability to become easily associated with many active principles or to solubilise said principles and to release same in vivo. Said aim is achieved with novel copolyhydroxyalkylglutamines comprising glutamine units and optionally glutamate units and bearing hydrophobic groups containing between 8 and 30 carbon atoms. Said copolyhydroxyalkylglutamines are amphiphilic and can be easily and economically transformed into particles for the vectorisation of active principles, whereby said particles can form stable aqueous colloidal suspensions.
GLUTAMATE DERIVATIVES FOR TOPICAL USE AS IMMUNOMODULATORY ACTIVE INGREDIENT
申请人:PIERRE FABRE DERMO-COSMETIQUE
公开号:US20160060208A1
公开(公告)日:2016-03-03
The present invention relates to L-glutamate-derived compounds of general formula (1) in which the R radical is a linear or branched C
5
to C
2
alkyl group, .—or the benzyl radical, .—or the phenethyl radical, for topical use as a medicament (or as a dermatological active ingredient) intended for the treatment and/or prevention of inflammatory dermatoses.