Synthesis of potent and selective dopamine D4 antagonists as candidate radioligands
作者:Yiyun Huang、Lawrence S. Kegeles、Sung-A Bae、Dah-ren Hwang、Bryan L. Roth、Jason E. Savage、Marc Laruelle
DOI:10.1016/s0960-894x(01)00241-4
日期:2001.6
series of dopamine D(4) antagonists was synthesized and evaluated as potential candidates for development as positronemissiontomography (PET) radioligands. All new compounds display high affinity and selectivity for the D(4) receptors and compounds 5b, 5d, and 5e were identified as candidates for radioliganddevelopment.
[EN] SUCCINATE AND FUMARATE ACID ADDITION SALTS OF PIPERAZINE DERIVATIVES USEFUL AS GLYCOSIDASE INHIBITORS<br/>[FR] SELS D'ADDITION D'ACIDE SUCCINATE ET FUMARATE DE DÉRIVÉS DE PIPÉRAZINE UTILES EN TANT QU'INHIBITEURS DE GLYCOSIDASE
申请人:ASCENEURON S A
公开号:WO2020039030A1
公开(公告)日:2020-02-27
The invention relates to succinic acid addition salts or fumaric acid addition salts of piperazine derivatives of formula (I), as well as solid forms, such as polymorphic forms, thereof, which are useful as pharmaceutical ingredients and in particular as glycosidase inhibitors.
The invention provides a compound of formula (I) or a salt or solvate thereof: wherein R
1
, n, X, Y and Z are as defined in the specification, and uses of such compounds. The compounds inhibit GlyT1 transporters and are useful in the treatment of certain neurological and neuropsychiatric disorders, including schizophrenia.
Acylated Piperidines as Glycine Transporter Inhibitors
申请人:Bradley Daniel Marcus
公开号:US20080255144A1
公开(公告)日:2008-10-16
The invention provides a compound of formula (I) or a salt or solvate thereof:
wherein R
1
, n, X, Y and Z are as defined in the specification, and uses of such compounds. The compounds inhibit GlyT1 transporters and are useful in the treatment of certain neurological and neuropsychiatric disorders, including schizophrenia.
Carbamates, typically used for the protection of amines, including Cbz, Alloc, and methylcarbamate, can be readily deprotected by treatment with 2-mercaptoethanol in the presence of potassium phosphate tribasic in N,N-dimethylacetamide at 75 °C. This nucleophilic deprotection protocol is superior to the standard hydrogenolysis or Lewis acid-mediated deprotection conditions for substrates bearing a