Facile Radiosynthesis of Fluorine-18 Labeled β-Blockers. Synthesis, Radiolabeling, and ex Vivo Biodistribution of [18F]-(2S and 2R)-1-(1-Fluoropropan-2-ylamino)-3-(m-tolyloxy)propan-2-ol
摘要:
An efficient and genral method has been developed for fluorine-18 labeling of beta-blockers that possess the propanolamine moiety. A new synthetically versatile intermediate, 3-(1-(benzyloxy)propan-2-yl)-2-oxoox-azolidin-5-yl)methyl 4-methylbenzenesulfonate (13), was prepared and can be conjugated to any phenoxy core. To demonstrate the synthetic methodology, fluorinated derivatives of toliprolol were prepared, namely, [(18)F]-(2S and 2R)-]-(1-fluoropropan-2-ylamino)-3-(m-tolyloxy)propan-2-ol ((2S and 2R)-[(18)F]1). The radiosyntheses were accomplished in < 1 h, with 20-24% (uncorrected for decay, n = 7) radiochemical yields, > 96% radiochemical and > 99% enantiomeric purities, with specific activities of 0.9-1.1 Ci/mu mol(EOS). Ex vivo biodistribution studies with the radiotracers demonstrated excessively rapid washout that May limit their use for cerebral PET imaging.
[EN] NOVEL PYRAZOLO-PYRROLO-PYRIMIDINE-DIONE DERIVATIVES AS P2X3 INHIBITORS<br/>[FR] NOUVEAUX DÉRIVÉS DE PYRAZOLO-PYRROLO-PYRIMIDINE-DIONE UTILISÉS EN TANT QU'INHIBITEURS DE P2X3
申请人:BAYER AG
公开号:WO2019081343A1
公开(公告)日:2019-05-02
The present invention covers substituted Pyrazolo-pyrrolo-pyrimidine-dione (PPPD) compounds of general formula (I): in which R1, R2 and R3 are as defined herein, methods of preparing said compounds, pharmaceutical compositions and combinations comprising said compounds and the use of said compounds for manufacturing pharmaceutical compositions for the treatment or prophylaxis of diseases, in particular of neurogenic diseases, as a sole agent or in combination with other active ingredients.
Novel oxadiazole compounds, pharmaceutical compositions containing such compounds and the use of those compounds or compositions as agonists or antagonists of the S1P family of G protein-coupled receptors for treating diseases associated with modulation of S1P family receptor activity, in particular by affording a beneficial immunosuppressive effect are disclosed.
[EN] HETEROARYL COMPOUNDS AND THEIR USE AS THERAPEUTIC DRUGS<br/>[FR] COMPOSÉS HÉTÉROARYLE ET LEUR UTILISATION COMME MÉDICAMENTS THÉRAPEUTIQUES
申请人:DONG-A SOCIO HOLDINGS CO LTD
公开号:WO2017039331A1
公开(公告)日:2017-03-09
The present invention provides heterocyclic compounds, the stereoisomer thereof, the enantiomer thereof, or the pharmaceutically acceptable salt, which are capable of modulating the activity of Mer receptor tyrosine kinase (MERTK). This invention also provides pharmaceutical compositions thereof, methods to prepare the said compounds, and the use of such compounds as a medicament. The present invention is directed to MERTK inhibitory compounds with marked potency, thereby having an outstanding potential for a pharmaceutical intervention of cancer and any other diseases related to MERTK dysregulation.
Über die Herstellung von N-Methyl-N-[1,2,3,4-tetra-hydro-naphtyl-(2)]-β-aminopropionsäure-(2′-oxy-isopropyl)-amid und N-Methyl-N-[1,2,3,4-tetrahydro-naphtyl-(2)]-β-amino-propionsäure-(2′-amino-isopropyl)-ester-dihydrochlorid
作者:V. Burckhardt、W. Kündig、P. Sieber
DOI:10.1002/hlca.19520350502
日期:1952.8.1
DieHerstellungvonN-Methyl-N-[1,2,3,4-tetrahydro-naphtyl-(2)]-β-aminopropionsäure-(2β-oxy- ispropyl)-amidundN-Methyl-N-[1,2,3,4-tetrahydro-naphtyl-(2)]-β-aminopropionsäure-(β2-amin -iso-propyl)-ester-dihydrochlorid wird beschrieben.
D. Herstellung von N-Methyl-N- [1,2,3,4-tetrahydro-naphtyl-(2)]-β-aminopropionsäure-(2β-oxy-ispropyl)-amid and N-Methyl-N- [1, 2,3,4-四氢萘基-(2)]-β-氨基丙酸酯-(β2-氨基-异丙基)-酯-二盐酸盐。
PREPARATION OF N-BENZYLAMINES
申请人:——
公开号:US20020193636A1
公开(公告)日:2002-12-19
N-Benzylamines are prepared by a process in which
(i) in a first step, a benzaldehyde is reacted with a primary amine to give the imine and
(ii) in a second step, the imine is hydrogenated with hydrogen in the presence of a catalyst containing one or more metals of groups 8 to 10 of the Periodic Table of the Elements to give the N-benzylamine,
wherein the iminization (i) is carried out in a water-miscible solvent and the resulting water of reaction is not removed, and the hydrogenation (ii) is carried out in the imine solution obtained in the iminization (i) and containing water of reaction.