摘要:
2,6-di-O-methyl-beta-cyclodextrin complexes of compounds of the formula (1a) ##STR1## wherein R.sup.2' stands for C.sub.1 to C.sub.12 alkyl or a group of the formula ##STR2## in which R.sup.11 is C.sub.1 to C.sub.4 alkyl;R.sup.12 is hydrogen or C.sub.1 to C.sub.4 alkyl;n is 0 or 1;p is 1 to 4;r is 1 to 4; andR.sup.3' and R.sup.4' are each C.sub.1 to C.sub.4 alkyl, or pharmaceutically salts thereof are disclosed, having analgesic activity.
摘要:
An inclusion complex is disclosed of N-(1-phenylethyl)-3, 3-diphenyl-propylamine or its hydrochloride complexed with a cyclodextrin as well as a process for the preparation thereof and pharmaceutical compositions containing same. The new inclusion complexes have coronary dilatory activity and have greater water soluble than simple N-(1-phenylethyl)-3, 3-diphenyl-propyl amine or the hydrochloride thereof.
摘要:
The invention relates to inclusion complexes of 3-morpholino-sydnonimine or its salts or its tautomer isomer, process for the preparation thereof and pharmaceutical compositions containing the same.The inclusion complex of 3-morpholino-sydnonimine or its salt formed with cyclodextrin derivative is prepared bya) reacting the 3-morpholino-sydnonimine or its salt in an aqueous medium with a cyclodextrin derivative and the complex is isolated from the solution by dehydratation, orb) high energy milling of 3-morpholino-sydnonimine or its salt and a cyclodextrin derivative.
摘要:
The invention relates to inclusion complexes of N-ethoxycarbonyl-3-morpholino-sydnonimine or its salts formed with a cyclodextrin derivatives, preparation thereof and pharmaceutical compositions containing the same.The inclusion complex of N-ethoxycarbonyl-3-morpholino-sydnonimine or its salt formed with cyclodextrin derivative is prepared bya) reacting the N-ethoxycarbonyl-3-morpholino-sydnonimine or its salt and the cyclodextrin derivative in a solvent medium, and if desired recovering the complex from the solution by dehydration, orb) high energy milling of the N-ethoxycarbonyl-3-morpholino-sydnonimine or its salt and the cyclodextrin derivative.
摘要:
Microbiological conversions of cyclodextrins are intensified by adding to the reaction mixture 0.2 to 3 moles of .alpha.-, .beta.- or .gamma.-cyclodextrin or an optical mixture thereof pro mole of the steroid substrate, before, at the beginning or during the conversion. The cyclodextrin if desired, can be removed after the reaction. In this way the reaction velocity can be increased, the reaction time is reduced, the substrate concentration in the solution, i.e. its solubility is increased or the so called product inhibition may be avoided. In certain cases of more alternatives the desired reaction can be catalyzed and in this manner the selectivity is increased.
摘要:
The invention relates to the inclusion complexes of 7-isopropoxy-isoflavone formed with cyclodextrin or cyclodextrin derivatives as well as to the pharmaceutical compositions containing these inclusion complexes as active ingredient. The invention further relates to the preparation of the new inclusion complexes. The new inclusion complex according to the invention shows higher dissolution and resorption properties as compared to the active ingredient administered per se.
摘要:
The present invention relates to a pharmaceutical composition comprising a peranhydrocyclodextrin, a drug and a carrier, to the use of a peranhydrocyclodextrin as a drug transport enhancer (e.g. permeation enhancer), and to the use of a peranhydrocyclodextrin in the preparation of a pharmaceutical composition as a synergistic adjunctive system.
摘要:
This invention relates to new cyclodextrin derivatives, processes for producing these cyclodextrin derivatives, and inclusion complexes comprised of the new cyclodextrin derivatives and guest molecules, as well as methods of making such materials and related materials and methods of using the same.
摘要:
Use of a compound of formula (I): wherein the symbol cyclodextrin ]n represents a n-valent residue derived from a cyclodextrin compound by removing n of its hydroxyl groups; n is a number greater than 0 and represents the average number of substituents of formula per molecule of said compound; h is 0 or 1; R1 is a di-valent group selected from alkylene, hydroxy alkylene, halogeno alkylene, monocyclic aralkylene, cycloalkylene and phenylene; R2, R3 and R4 are each independently of one another a group selected from alkyl, cycloalkyl, aryl, aralkyl, and cycloheteryl; Xm− is a m-fold negatively charged anion; m is an integer being equal or greater than 1; and k is n/m in the preparation of an anti-infective medicament, as preservative and penetration enhancer.
摘要:
The present invention relates to novel materials, particularly biomaterials, in form of a precipitate, comprising at least an anionic polymeric component which is as such soluble in water and an amphiphilic ammonium-type component, which precipitate is obtainable by a process including the following steps: 1. contacting the anionic polymeric component and an cyclodextrin component in an aqueous medium, and 2. adding to the mixture obtained in step 1 said amphiphilic ammonium-type component, wherein said components are present in amounts effective to form said precipitate, and preferably to corresponding precipitates additionally comprising said cyclodextrin component. Both types of precipitates may optionally comprise one or more further components. The precipitates are particularly useful as controlled-release depot formulations suitable for long-lasting delivery of said further components. The further components incorporated into the precipitates can be pharmaceutical compounds, pesticides, agrochemicals, colorants, diagnostics, enzymes, foodstuffs etc.