POLYMER-CARBOHYDRATE CONJUGATES FOR DRUG DELIVERY TECHNOLOGY
申请人:Wu Nian
公开号:US20150157721A1
公开(公告)日:2015-06-11
The invention comprises compounds, methods of making, and methods of using. The compounds may have a linear or cylic backbone and three or four appended functional groups: one or two lipohilic compounds including sterols or “fat soluble” vitamins, one or two hydrophilic polymer, and one or two carbohydrate. A group of polymer-carbohydrate conjugates having a central backbone and three appended functional groups are disclosed wherein one lipophilic compound is void of both steroid acids. The conjugate may have fatty acids as the primary lipophilic carrier, one hydrophilic polymer, and one carbohydrate. Specific functional groups may be selected for specific applications in formulating pharmaceuticals, cosmetics, nutriceuticals, and the like. Typical coupling reaction of the conjugates may involve one or more or combinations or in series of alkylation including N-alkylation or O-alkylation, etherification, esterification and amidation chemical processes. A variety of linkers between the backbone and functional groups may also be selected to modify the carriers or center backbones for the coupling reactions and optimize performance of the conjugates.
SYNTHESIS OF IMIDAZO[1,2-a]PYRAZIN-4-IUM SALTS FOR THE SYNTHESIS OF 1,4,7-TRIAZACYCLONONANE (TACN) AND N- AND/OR C-FUNCTIONALIZED DERIVATIVES THEREOF
申请人:CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
公开号:US20140142298A1
公开(公告)日:2014-05-22
The present invention embodiments relate to a compound with formula (V′)
The invention also relates in certain embodiments to the synthesis method for compound (V′) and its use for the preparation of 1,4,7-triazacyclononane (tacn) and N- and/or C-functionalized derivatives thereof, particularly compounds with formula (I)
The invention also relates in certain embodiments to metallic complexes comprising a ligand with formula (I) and a metal and their use for imaging.
The present invention provides new compounds with high affinity for adenosine A2A receptors. It also provides antagonists of adenosine A2A receptors and their use as medicaments for the treatment and/or prophylaxis of diseases and disorders where the partial or total inactivation of adenosine A2A receptors signalling pathways could be beneficial such as Alzheimer's disease, Parkinson's disease, attention deficit and hyperactivity disorders (ADHD), Huntington's disease, neuroprotection, schizophrenia, anxiety and pain. The present invention further relates to pharmaceutical compositions containing such new compounds with high affinity for adenosine A2A receptors and their use for the treatment and/or prophylaxis of diseases and disorders where the partial or total inactivation of adenosine A2A receptors could be beneficial.
2,4-Diaminoquinazolines of the formula ##STR1## wherein Y.sup.1 is hydrogen or chloro, Y.sup.2 is OR, Y.sup.3 is hydrogen or OR such that when Y.sup.1 is hydrogen, Y.sup.3 is OR and when Y.sup.1 is chloro, Y.sup.3 is hydrogen or OR, and the pharmaceutically acceptable salts thereof; R represents an alkyl group having from one to three carbon atoms; taken separately, R.sup.1 and R.sup.2 are each hydrogen, alkyl having from one to five carbon atoms, cycloalkyl having from three to eight carbon atoms, alkenyl or alkynyl each having from three to five carbon atoms or hydroxy substituted alkyl having from two to five carbon atoms, when taken together with the nitrogen atom to which they are attached R.sup.1 and R.sup.2 form a substituted or unsubstituted heterocyclic group optionally containing an atom of oxygen, sulfur or a second atom of nitrogen as a ring member; their use as antihypertensive agents, pharmaceutical compositions containing them and intermediates for their production.
with tetralin or an oxygen-containing heterocyclic compound as a N alpha-substituent showed an inhibition with an I50 less than 10(-5) M. N-Monosubstituted derivatives of N alpha-dansyl-L-arginine amide were not hydrolyzed at all by thrombin and were hydrolyzed very slowly by trypsin, and N,N-disubstituted derivatives were not hydrolyzed at all by both enzymes.
制备了一系列具有取代或未取代的萘和杂环化合物作为Nα取代基的Nα-(芳基磺酰基)-L-精氨酸酰胺衍生物,并测试了它们作为凝血酶凝血活性的抑制剂。Nα-丹磺酰基-L-精氨酸酰胺的Nn-丁基和Nn-丁基-N-甲基衍生物对Nα-丹磺酰基-L-精氨酸酰胺的N-烷基和N,N-二烷基衍生物的抑制作用最大。它们的抑制作用与I50为2 X 10(-6)M的Nα-丹磺酰基-L-精氨酸-正丁酯的抑制作用一样。Nα-取代的4-甲基萘他磺酰基-L-精氨酸酰胺衍生物-和4-乙基哌啶也显示出有效的抑制作用,I50为10(-7)至10(-6)M。在该研究中,最有效的抑制作用是1- [Nα-(4,6-二甲氧基萘-2-磺酰基]-精氨酰基] -4-甲基哌啶,I50为7。