l-Serine and glycine based ceramide analogues as transdermal permeation enhancers: polar head size and hydrogen bonding
摘要:
Novel transdermal permeation enhancers related to stratum corneum ceramides were investigated. The synthesis of a series of simple compounds based on two selected amino acids, L-serine and glycine, and their enhancement activities are reported. Glycine derivative 3 enhanced the permeation of theophylline through human skin in vitro 12.5 +/- 0.5 times. The relationships between properties of the polar head of the compounds and their activity are discussed. (C) 2003 Elsevier Science Ltd. Ail rights reserved.
A pharmaceutical preparation has a ligand structure specifically recognizing a target site and an amphiphilic compound having a hydrophobic or amphiphilic group. The pharmaceutical preparation employs an amphiphilic compound of specific structure obtained by introducing a chained hydrophilic group with an appropriate flexibility, and thus becomes a fine particle suited for drug targeting.
The pharmaceutical preparation is expected to give a prolonged pharmacological effect. A particulate preparation exhibiting a remarkable site targeting property can be formed. Further, according to the selection of matrix forming material, the drug releasing property can be controlled.
[EN] PHENOLIC ACID LIPID BASED CATIONIC LIPIDS<br/>[FR] LIPIDES CATIONIQUES À BASE DE LIPIDE D'ACIDE PHÉNOLIQUE
申请人:TRANSLATE BIO INC
公开号:WO2021202694A1
公开(公告)日:2021-10-07
The present invention provides, in part, phenolic acid lipid compounds of Formula (I), and sub-formulas thereof, or a pharmaceutically acceptable salt thereof. The compounds provided herein can be useful for delivery and expression of mRNA and encoded protein, e.g., as a component of liposomal delivery vehicle, and accordingly can be useful for treating various diseases, disorders and conditions, such as those associated with deficiency of one or more proteins.
Sun protection compositions comprising semi-crystalline polymers and hollow latex particles
申请人:Candau Didier
公开号:US20090041691A1
公开(公告)日:2009-02-12
Topically applicable cosmetic/dermatological UV protection compositions having enhanced SPF contain at least one organic UV screening agent and/or at least one inorganic screening agent, such compositions also containing at least the following constituents (A) and (B):
A) a semi-crystalline polymer which is solid at ambient temperature and has a melting point of greater than or equal to 30° C., containing a) a polymeric backbone and b) at least one crystallizable organic side chain and/or one crystallizable organic block forming part of the backbone of this said polymer, said polymer having a number-average molecular mass Mn of greater than or equal to 1,000, and
B) hollow latex particles having a particle size ranging from 150 to 380 nm, formulated into a topically applicable, physiologically acceptable medium therefor.
COSMETIC TREATMENT METHOD USING A COMPOUND THAT CAN BE CONDENSED IN SITU AND A UV-RADIATION-FILTERING AGENT
申请人:Samain Henri
公开号:US20120328542A1
公开(公告)日:2012-12-27
The present invention relates to a method for the cosmetic treatment of the skin, comprising the application, to the skin:
of a compound or group of compounds A capable of condensing in situ and exhibiting at least one reactive functional group F
A
which is free after condensation; and
of a screening agent C which screens out UV radiation, comprising a reactive functional group F
C
capable of forming a covalent bond or a physical (ionic, hydrogen) bond by reaction with the functional group F
A
.
本发明涉及一种用于皮肤美容治疗的方法,包括将以下物质应用于皮肤:
一种或一组化合物A,能够在原位缩合并具有至少一个反应性功能基团F
A
,在缩合后是自由的;以及
一种用于屏蔽紫外线辐射的筛选剂C,包括一个具有反应性功能基团F
C
的物质,能够通过与功能基团F
A
的反应形成共价键或物理(离子、氢)键。