Development of an Optimized Synthetic and Purification Process of S-2367 (Velneperit), a Novel Neuropeptide Y (NPY) Y5 Receptor Antagonist
摘要:
We developed a simple synthetic route to S-2367 (Velneperit) (1) using trans-1-ethoxycarbonyl-4-aminocyclohexane hydrochloride salt (12) as a starting material. The key step was Na2WO4/H2O2 oxidation, and we found that it was accelerated in weakly basic conditions. The finding was useful to control one of the critical impurities: 14 in 10. The new process was more efficient than the early process from the viewpoint of the number of reactions, yield, throughput, and EHS (environment, health, and safety) but a quality deviation occurred in the pilot manufacturing: 10 content in 1 was over the upper limit. The cause was presumed to be hydrolysis of 1 during the recrystallization step. After finding it, we developed two reliable purification processes. The first was slurry washing including clever polymorphic control using only acetone and water. The second was salt formation of 10 and rational building of the recrystallization procedure based on solubility to improve removal rate.
Short and Efficient Process for the Synthesis of trans-4-Aminocyclohexanecarboxylic Acid Derivatives
摘要:
This contribution relates to an industrially feasible process for the preparation of isomerically pure trans-4-amino-1-cyclohexanecarboxylic acid derivatives that are useful building blocks in the synthesis of several pharmacologically active compounds such as glimepiride, L-370518.
Prescreening of Nicotine Hapten Linkers in Vitro To Select Hapten-Conjugate Vaccine Candidates for Pharmacokinetic Evaluation in Vivo
作者:Viswanath Arutla、Joseph Leal、Xiaowei Liu、Sriram Sokalingam、Michael Raleigh、Adejimi Adaralegbe、Li Liu、Paul R. Pentel、Sidney M. Hecht、Yung Chang
DOI:10.1021/acscombsci.6b00179
日期:2017.5.8
(ELISA) to profile the interactions of nicotine haptens or hapten-protein conjugates with nicotine specific antibodies, both polyclonal and monoclonal. Another relies on computational modeling of the interactions between haptens and amino acid residues near the conjugation site of the carrierprotein to infer linker-carrier protein conjugation effect on antinicotine antibody response. Using these two in
[EN] THIENOPYRROLE COMPOUNDS AND USES THEREOF AS INHIBITORS OF OPLOPHORUS-DERIVED LUCIFERASES<br/>[FR] COMPOSÉS DE THIÉNOPYRROLE ET LEURS UTILISATIONS À TITRE D'INHIBITEURS DE LUCIFÉRASES DÉRIVÉES D'OPLOPHORUS
申请人:PROMEGA CORP
公开号:WO2016210294A1
公开(公告)日:2016-12-29
Thienopyrrole compounds that may inhibit Oplophorus -derived luciferases are disclosed, as well as compositions and kits comprising the thienopyrrole compounds, and methods of using the thienopyrrole compounds.
CARBOXYL- OR HYDROXYL-SUBSTITUTED BENZIMIDAZOLE DERIVATIVES
申请人:Benson Gregory Martin
公开号:US20090163552A1
公开(公告)日:2009-06-25
This invention relates to novel carboxyl- or hydroxyl-substituted benzimidazole derivatives of formula (I)
wherein R
1
to R
6
are as defined in the description and in the claims, as well as physiologically acceptable salts and esters thereof. These compounds bind to FXR and can be used as medicaments.
[EN] FUSED RING PYRIMIDONE DERIVATIVES FOR USE IN THE TREATMENT OF HBV INFECTION OR OF HBV-INDUCED DISEASES<br/>[FR] DÉRIVÉS DE PYRIMIDONE À CYCLES FUSIONNÉS DESTINÉS À ÊTRE UTILISÉS DANS LE TRAITEMENT D'UNE INFECTION PAR LE VIRUS DE L'HÉPATITE B OU DE MALADIES INDUITES PAR LE VIRUS DE L'HÉPATITE B
申请人:JANSSEN SCIENCES IRELAND UNLIMITED CO
公开号:WO2020182990A1
公开(公告)日:2020-09-17
The present application relates to compounds according to Formula (I), pharmaceutical compositions comprising at least one of said compounds, their use as a medicament, and their use in treating chronic hepatitis B virus (HBV) infection. The disclosure further pertains to methods for preparing compounds according to Formula (I).