摘要:
The invention relates to the use as contrast enhancing agents in medical imaging, especially X-ray imaging, of multinuclear complexes, i.e. complexes, such as those of W2O2 (u2O)2, in which the complexed entity comprises at least two contrast enhancing atoms.
摘要:
Heterocyclic chelating agents and salts thereof of formula I: ##STR1## wherein X represents a bond, O or S, or a group CHR.sup.1 or NR.sup.3, each R.sup.1 represents H, a group OR.sup.3 or NR.sup.3 R.sup.3, or an alkyl or alkoxyalkyl group optionally substituted by a hydroxyl group or by a group NR.sup.3 R.sup.3 or CON.sup.3 R.sup.3 ;each R.sup.2 represents H, or an alkyl or alkoxy group optionally substituted by a hydroxyl or aloxy group;each R.sup.3 represents H, an optionally hydroxylated alkyl group or a group CH.sub.2 Y;Y represents a group COZ, CON(OH)R.sup.4, POZ.sub.2 or SO.sub.2 Z; Z represents a group OR.sup.4, NR.sup.4 R.sup.4 or ##STR2## where each R.sup.11 is H, a hydroxyl group or an optionally hydroxylated alkyl group, s is 0, 1 or 2, and W is CHR.sup.11, NR.sup.11 or an oxygen atom; andeach R.sup.4 represents H, or an optionally mono- or poly-hydroxylated alkyl, alkoxyalkyl or polyalkoxyalkyl group;with the provisos that where s is O then W is CHR.sup.11 and that where X represents a bond or CHR.sup.1, at least one group R.sup.1 or R.sup.2 represents other than H or an unsubstituted alkyl group. A process for preparing these agents and methods of heavy metal detoxification using these agents are alo described.
摘要:
The invention relates to metal complex compounds, contrast agents for MRI and in vivo NMR markers for NMR spectroscopy comprising said metal complex compounds and methods for in vivo determination of physiological parameters, e.g. enzyme activity or pH using said metal complex compounds.
摘要:
Contrast agents comprising microbubble-generating carbohydrate microparticles having a surfactant admixed within the microparticulate structure, with the proviso that the surfactant is not a C10-20 fatty acid, are disclosed. Processes for preparing contrast agents also are disclosed.
摘要:
Contrast agents comprising gas-containing or gas-generating polymer microparticles and/or microballoons, in which the polymer is a biodegradable polymer containing units of formula --(O).sub.m --CO--O--C(R.sup.1 R.sup.2)--O--CO--(O).sub.n -- (wherein R.sup.1 and R.sup.2 each represent hydrogen or a carbon-attached monovalent organic group or together form a carbon-attached divalent organic group, and m and n are each independently zero or one) may be used in diagnostic applications such as ultrasound and MR imaging.
摘要翻译:包含含气体或产生气体的聚合物微粒和/或微球的造影剂,其中聚合物是含有式(O)m -CO-OC(R 1 R 2)-O-CO-(O)n的单元的可生物降解的聚合物 - (其中R 1和R 2各自表示氢或连接碳的一价有机基团或一起形成连接碳的二价有机基团,m和n各自独立地为0或1)可以用于诸如超声波和MR的诊断应用 成像。
摘要:
There are provided chelating agents particularly useful for the preparation of diagnostic and therapeutic agents for magnetic resonance imaging, scintigraphy, ultrasound imaging, radiotherapy and heavy metal detoxification, said agents being compounds of formula IX--CHR.sub.1 NZ--(CHR.sub.1).sub.n --A--(CHR.sub.1).sub.m --NZ--CHR.sub.1 --X (I)(wherein each of the groups Z is a group --CHR.sub.1 X or the groups Z together are a group --(CHR.sub.1).sub.q --A'--(CHR.sub.1).sub.r --, where A' is an oxygen or sulphur atom or a group --N--Y;A is a group --N--Y or A--(CHR.sub.1).sub.m -- represents a carbon-nitrogen bond or, when the groups Z together are a group --(CHR.sub.1).sub.q --A'--(CHR.sub.1).sub.r --, A may also represent an oxygen or sulphur atom;each Y, which may be the same or different, is a group --(CHR.sub.1).sub.p --N(CHR.sub.1 X).sub.2 or a group --CHR.sub.1 X;each X, which may be the same or different, is a carboxyl group or a derivative thereof or a group R.sub.1 ;each R.sub.1, which may be the same or different, is a hydrogen atom, a hydroxyalkyl group or an optionally hydroxylated alkoxy or alkoxyalkyl group;n,m,p,q and r are each 2,3 or 4; with the provisos that at least two nitrogens carry a --CHR.sub.1 X moiety wherein X is a carboxyl group or a derivative thereof, that each --CHR.sub.1 X moiety is other than a methyl group, and that unless A' is oxygen or sulphur or A is N--(CHR.sub.1).sub.p --N(CHR.sub.1 X).sub.2 at least one R.sub.1 is other than hydrogen) and salts thereof.
摘要:
A peptide comprising a unit of formula (I) and having a molecular weight of less than 2000 wherein each X is independently an organic group, e.g. a C1-6 alkyl or C1-6 alkenyl group, preferably —CH2—CH═CH2, or the two X groups taken together can form a covalent or non-covalent link between the two O groups, preferably a C1-10 saturated or unsaturated carbon chain optionally interrupted by one or more heteroatoms selected from O, S, N, P, or Si, especially a C3-10 carbon chain or one X represents an azido group and the other an C2-6-alkynyl group; both Z's are the same and are O or S; each Y is independently C, CH, CH2, N or NH; R1 is H or C1-6 alkyl; R2 is H or C1-6 alkyl; R5 is a C1-6 alkyl group, preferably isopropyl; or a salt, ester or prodrug thereof.
摘要:
A topical composition, e.g. pharmaceutical or cosmetic composition comprising at least one cyclodextrin complex of a marine unsaturated fatty acid or derivative thereof wherein the weight ratio of cyclodextrin to marine fatty acid or derivative thereof is between 1:10 and 10:1.
摘要:
A process for the preparation of a water soluble unsaturated fatty acid salt from a crude composition comprising at least one non-water soluble or sparingly water soluble unsaturated fatty acid or salt thereof, said process comprising: adding to said crude composition in the presence of water at least one amino alcohol compound so as to form a water soluble amino alcohol salt of said acid or salt; separating an aqueous phase; and optionally isolating said salt from said aqueous phase.