摘要:
The present invention relates to a process to prepare N,N'-di(2-hydroxybenzyl) ethylenediamine-N,N'-diacetic acid and salts thereof (HBED) comprising a reaction between formaldehyde, ethylenediamine diacetic acid or a salt thereof (EDDA) and phenol, wherein the reaction mixture contains 0.2 to 1.1 molar equivalents of alkali metal ions on the basis of the molar amount of EDDA and the reaction mixture is processed by a step in which at least part of the organic compounds other than the formed HBED are removed from the reaction mixture, and optionally recycled, during which step at least 50% and up to and including 100% of the alkali metal ions in the reaction mixture are potassium ions, to products obtainable by such process and their use.
摘要:
The invention relates to precursors for the production of optically active 18 F-labelled amino acids bearing the radiochemical label on an aromatic ring, in particular 6-[ 18 F]Fluoro-3,4- dihydroxy-L-phenylalanine ([ 18 F]-L-DOPA) as well as meta- and para-[ 18 F]Fluoro-L- tyrosine. Further, it relates to a radiochemical method for the production of the corresponding radiotracers.
摘要:
The present invention provides a method for the production of [ 18 F]-FACBC which has advantages over know such methods. Also provided by the present invention is a system to carry out the method of the invention and a cassette suitable for carrying out the method of the invention on an automated radiosynthesis apparatus.
摘要:
The invention relates to novel methods for synthesizing a synthon for γ,δ- dihydroxyisoleucine 1 (CAS No. 55399-94-5] as building block for the synthesis of amatoxins, and for novel methods for synthesizing amatoxins using such building block.
摘要:
The invention provides crystalline forms of (R)-3-[N-(3'- chlorobiphenyl-4-ylmethyl)-N'-(3-hydroxyisoxazole-5-carbonyl) hydrazino]-2-hydroxypropionic acid isopropyl ester. The application also provides pharmaceutical compositions comprising the crystalline compound and processes and intermediates for preparing the crystalline compound and methods of using the crystalline compound to treat diseases.
摘要:
The instant invention describes a novel asymmetric synthesis of fluoroleucine alkyl esters which utilizes allylation of a glycine derivative containing an imine moiety in the presence of a phase transfer catalyst and a solid additive, followed by fluorination of the alpha-allyl product so obtained, with a fluorinating agent such as Olah's reagent.
摘要:
The present invention provides a method for the synthesis of 18F-labelled biomolecules, which is amenable to automation. The present invention also provides a cassette for automating the method of the invention. The method of the present invention provides numerous advantages over the prior art methods. One less purification step is required as compared with known methods. Also, in a preferred embodiment, one less reagent is required as a particular reagent is employed in two different steps. The chemistry process is thereby simplified, the cost of goods is reduced and the burden of validation and documentation of reagents required for GMP clinical production is minimised.
摘要:
The disclosure relates to cyclopropyl derivatives and methods of use. In some embodiments, the disclosure relates to methods of managing medical disorders with pharmaceutical compositions disclosed herein administered to subject in need thereof. In certain embodiments, the disclosure relates to methods of managing mental disorders, mood disorders, pain, and fibromyalgia and related conditions with pharmaceutical compositions disclosed herein.
摘要:
The present invention relates to a novel manufacturing process of pharmaceutically active compound of formula (I) used as oral anti-diabetic drug. Starting from -aspartic acid derivate of formula (IV) the invention describes preparation of the chiral (R)-β-amino acid of formula (II) known as a precursor in the synthesis of Sitagliptin (Formula I). Formulae (I), (II) & (IV):