A Simple Synthesis of α,β-Unsaturated γ-Aminobutyric Acid (GABA) Derivatives from Enamines
作者:Hans Henniges、Chiara Gussetti、Hans-Christian Militzer、Mark S. Baird、Armin de Meijere
DOI:10.1055/s-1994-25716
日期:——
Bromination of enamines 3b-g at - 78°C and subsequent treatment of the resulting iminium salts 4b-g with excess tert-butyl lithioacetate leads to tert-butyl 4-(N,N-dialkylamino)carboxylates 9b-g in good to very good yields. Ester cleavage of the dibenzylamino derivative 9d with trifluoroacetic acid yields the corresponding acid 10. Subsequent catalytic hydrogenation of 10 leads to the fully deprotected 4-amino-4-methylpentanoic acid (12) in high yield.
The present invention provides pharmaceutical compositions comprising compounds of Formula (I), and methods of treating neurological disorders comprising administering to a subject in need thereof a pharmaceutical composition comprising a compound of Formula (I).
2,3-DIHYDRO-1H-PYRROLIZINE-7-FORMAMIDE DERIVATIVE AND APPLICATION THEREOF
申请人:Chia Tai Tianqing Pharmaceutical Group Co., Ltd.
公开号:EP3805223A1
公开(公告)日:2021-04-14
The present application relates to a 2,3-dihydro-1H-pyrrolizine-7-formamide derivative as a nucleoprotein inhibitor and a use in preparation of a drug for treating HBV related diseases. The present application specifically relates to a compound represented by formula (II), and isomers or pharmaceutically acceptable salts thereof.
NITROGEN-CONTAINING HETEROCYCLIC COMPOUND OR SALT THEREOF
申请人:FUJIFILM Corporation
公开号:US20150045339A1
公开(公告)日:2015-02-12
The object is to provide an Fms-like tyrosine kinase 3 (FLT3) inhibitor useful as a therapeutic agent for acute myeloid leukemia (AML). A novel nitrogen-containing heterocyclic compound represented by the general formula [1] or a salt thereof is provided. The compound or a salt thereof of the present invention can be used as an active ingredient of a pharmaceutical composition for a treatment of a disease or condition relating to FLT3, such as acute myeloid leukemia (AML) and acute promyelocytic leukemia (APL).
Linear Analogues of Acid- and Ester-Terminated Polyamido Dendrimers: Design, Syntheses, and Physical Properties
作者:George R. Newkome、Charles N. Moorefield、Jon D. Epperson
DOI:10.1002/ejoc.200300238
日期:2003.9
synthesis of linear, unnatural amines and carboxylic acids, based on amide connectivity and possessing identical repeat unit architecture to that of analogous dendrimers, was undertaken to assess and compare their physical characteristics. For the series, unexpected insoluble behavior was observed at low molecular weights in contrast to their branched counterparts or other known linear dendritic analogs