An Efficient Fischer Indole Synthesis of Avitriptan, a Potent 5-HT1D Receptor Agonist
摘要:
An efficient synthesis of the antimigraine drug candidate avitriptan (1, BMS 180048) is reported. The key step is a two-phase Fischer indolization reaction between hydrazine 6 and 5-chlorovaleraldehyde, 20, to give the chloropropylindole 35, which is susceptible to acid-catalyzed degradation under the reaction conditions required for its formation. Sequential coupling of 35 with piperazine, 26, and 4-chloro-5-methoxypyrimidine, 24, gives the title compound in 40-45% overall yield. Significant improvements in the syntheses of the known starting materials, hydrazine 6, 5-chlorovaleraldehyde, 20, and 4-chloro-5-methoxypyrimidine, 24, were also achieved.
[EN] PYRIMIDINE AND TRIAZINE DERIVATIVES AND THEIR USE AS AXL INHIBITORS<br/>[FR] DÉRIVÉS DE PYRIMIDINE ET DE TRIAZINE, ET LEUR UTILISATION COMME INHIBITEURS D'AXL
申请人:PFIZER
公开号:WO2016097918A1
公开(公告)日:2016-06-23
Compounds of the general formula(I): (I) processes for the preparation of these compounds, compositions containing these compounds, and the uses of these compounds.
The present invention covers heteroarylbenzimidazole compounds of general formula (I) in which R1, R2, R3, R4 and R5 are as defined herein, methods of preparing said compounds, intermediate compounds useful for 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 hyperproliferative and/or inflammatory disorders, as a sole agent or in combination with other active ingredients.
Indolylalkyl derivatives of pyrimidinylpiperazine for treating vascular
申请人:Bristol-Myers Squibb Company
公开号:US05300506A1
公开(公告)日:1994-04-05
A series of novel indol-3-ylalkyl derivatives of alkoxypyrimidinylpiperazines are disclosed as Formula I. ##STR1## These compounds are intended to be useful agents for alleviation of vascular headache on the basis of their potent affinity and agonist activity at 5-HT1D binding sites.
INDOLYLALKYL DERIVATIVES OF PYRIMIDINYLPIPERAZINE AND METABOLITES THEREOF FOR TREATMENT OF ANXIETY, DEPRESSION, AND SEXUAL DYSFUNCTION
申请人:KRAMER Stephen J.
公开号:US20090281114A1
公开(公告)日:2009-11-12
The present invention relates to a method for alleviation, prevention, and treatment of anxiety, depression, and sexual dysfunction by administering certain indolylalkyl derivatives of pyrimidinylpiperazine or metabolites thereof. A preferred embodiment is of the following formula: