THE 1-BUTYL-2-HYDROXYARALKYL PIPERAZINE DERIVATIVES AND THE USES AS ANTI-DEPRESSION MEDICINE THEREOF
申请人:Li Jianqi
公开号:US20110183996A1
公开(公告)日:2011-07-28
The invention discloses 1-butyl-2-hydroxyl aralkyl piperazine derivatives and their use as antidepressants. The derivatives of the present invention have triple inhibition effect on the reuptake of 5-HT, NA and DA, and can be administrated to the patients in need thereof in form of composition by route of oral administration, injection and the like. Compared with clinically currently used dual targets antidepressants (such as venlafaxine), said derivatives may have stronger antidepression effect, broader indications, faster onset and lower neurotoxicity and side reaction; and said derivatives have stronger antidepression activity, lower toxicity, higher bioavailability, longer half life and better druggablity, compared with aryl alkanol piperazine derivatives and optical isomers thereof disclosed in prior art. The 1-butyl-2-hydroxyl aralkyl piperazine derivative is the free alkali or its salt of a compound of formula below:
Synthesis of Quaternary α-Fluorinated α-Amino Acid Derivatives via Coordinating Cu(II) Catalytic α-C(sp<sup>3</sup>)–H Direct Fluorination
作者:Qiang Wei、Yao Ma、Li Li、Qingfei Liu、Zijie Liu、Gang Liu
DOI:10.1021/acs.orglett.8b03044
日期:2018.11.16
been developed to prepare vital quaternary α-fluorinated α-amino acid derivatives. A Cu(II) catalytic SET oxidative addition mechanism is proposed, involving a key fluoride-coupled Cu(II) charge transfer complex. The protocol can tolerate a rich variety of α-amino acids, for which the auxiliary group is removed in high yield and substituted for the direct preparation of dipeptide derivatives with detachable
A General Approach to Site‐Specific, Intramolecular C−H Functionalization Using Dithiocarbamates
作者:Christina G. Na、Erik J. Alexanian
DOI:10.1002/anie.201806963
日期:2018.10
Intramolecularhydrogen atom transfer is an established approach for the site‐specific functionalization of unactivated, aliphatic C−H bonds. Transformations using this strategy typically require unstable intermediates formed using strong oxidants and have mainly targeted C−H halogenations or intramolecular aminations. Herein, we report a site‐specific C−H functionalization that significantly increases
A process for preparing acyloxybenzenesulfonates by reacting a carboxylic acid derivative with a salt of a phenolsulfonic acid in the presence of an antioxidant, preferably 2,6-di-tert-butyl-4-methylphenol. The addition of such antioxidants gives a product having a high color quality.
Asymmetric synthesis of α-amino acids via diastereoselective addition of (R)-pantolactone to their ketenes
作者:Monique Calmes、Jacques Daunis、Nathalie Mai
DOI:10.1016/s0957-4166(97)00143-2
日期:1997.5
The diastereoselective addition of (R)-pantolactone to various amino ketenes derived from phthalylamino acids is reported. The configuration of the newly-generated asymmetric center is dependent on alkyl or aryl C alpha substitution. This method constitutes a novel and convenient way of amino acid deracemization. (C) 1997 Elsevier Science Ltd.