Mild, Aqueous α-Arylation of Ketones: Towards New Diversification Tools for Halogenated Metabolites and Drug Molecules
作者:Enrico Marelli、Yohann Renault、Sunil V. Sharma、Steven P. Nolan、Rebecca J. M. Goss
DOI:10.1002/chem.201700680
日期:2017.3.17
The palladium‐catalysed aqueous α‐arylation of ketones was developed and tested for a large variety of reaction partners. These mild conditions enabled the coupling of aryl/alkyl‐ketones with N‐protected halotryptophans, heterocyclic haloarenes, and challenging base‐sensitive compounds. The synthetic potential of this new methodology for the diversification of complex bioactive molecules was exemplified
Benzodiazepine derivatives and pharmaceutical compositions containing them
申请人:Merck & Co., Inc.
公开号:EP0167919A2
公开(公告)日:1986-01-15
Benzodiazepine analogs of the formula:
are disclosed which are antagonists of cholecystokinin (CCK).
式中的苯二氮卓类似物:
公开了胆囊收缩素(CCK)拮抗剂。
Benzodiazepine analogs
申请人:Merck & Co., Inc.
公开号:EP0284256A1
公开(公告)日:1988-09-28
Benzodiazepin analogs of the formula:
are disclosed which are antagonists of gastrin and cholecystokinin (CCK).
式中的苯二氮卓类似物:
公开了胃泌素和胆囊收缩素(CCK)的拮抗剂。
Discovery of 7-[<sup>18</sup>F]Fluorotryptophan as a Novel Positron Emission Tomography (PET) Probe for the Visualization of Tryptophan Metabolism in Vivo
作者:Boris D. Zlatopolskiy、Johannes Zischler、Dominique Schäfer、Elizaveta A. Urusova、Mehrab Guliyev、Olesia Bannykh、Heike Endepols、Bernd Neumaier
DOI:10.1021/acs.jmedchem.7b01245
日期:2018.1.11
Tryptophan and its metabolites are involved in different physiological and pathophysiological processes. Consequently, positron emission tomography (PET) tracers addressing tryptophan metabolic pathways should allow the detection of different pathologies like neurological disorders and cancer. Herein we report an efficient method for the preparation of fluorotryptophans labeled in different positions with F-18 and their biological evaluation. 4-7-[F-18]Fluorotryptophans ([F-18]FTrps) were prepared according to a modified protocol of alcohol-enhanced Cu-mediated radiofluorination in 30-53% radiochemical yields. In vitro experiments demonstrated high cellular uptake of 4-7[F-18]FTrps in different tumor cell lines. 4, 5-, and 6-[F-18]FTrps, although stable in vitro, suffered from rapid in vivo defluorination. In contrast, 7-[F-18]FTrp demonstrated a high in vivo stability and enabled a clear delineation of serotonergic areas and melatonin-producing pineal gland in rat brains. Moreover 7-[F-18]FTrp accumulated in different tumor xenografts in a chick embryo CAM model. Thus, 7-[F-18]FTrp represents a highly promising PET probe for imaging of Trp metabolism.
BETA CARBOLINE DERIVATIVES AS ANTIDIABETIC COMPOUNDS