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What is OSM Series 4?

Claire Littler edited this page Aug 2, 2017 · 13 revisions

Preamble

The Triazolopyrazine (TP) Series, or Series 4, is the latest of the OSM series. It was announced by MMV and on the OSM blog via the briefing document and as a general description on September 10th 2013.

A Representative Series 4 Triazolopyrazine

The series arises from work performed at Pfizer (that cannot be fully disclosed) which was followed by some hit-to-lead work funded directly by MMV and performed by a CRO (which can). The series includes many potent compounds, some with promising physicochemical properties, that are non-toxic and which clear assays such as hERG. Most importantly, members of the series have proven to be potent in vivo.

Background

What is OSM Series 4?

Aims, Concerns and Current Interest in Series 4

Sources of Data

Structure-Activity Relationships

Modification of Core Triazolopyrazine

Modification of Pyrazine Substitution Pattern

Modification of the Triazole Substitution

Pyrazine Side Chain Modifications - Ethers

Pyrazine Side Chain Modifications - Amides

Pyrazine Side Chain Modifications - Reversed Amides

Pyrazine Side Chain Modifications - Others

Metabolites

Biological Data Currently not Incorporated into the Main Wiki Sections

Physicochemical/Metabolic Parameters

Physicochem/metabolism/PK

Metabolism ID

Aldehyde Oxidase Assay

Stages and Efficacy

Liver Stage

Gametocyte Stage

In Vivo Efficacy

Potency vs. Resistant Strains

Other Observations

Mechanism of Action, Activity and Toxicity

Mechanism of Action: Possible PfATP4 Activity Deduced from Parasite Ion Regulation Assays

hERG Activity

Toxicity

Synthetic Chemistry

Synthetic Design

Synthesis of the Ether-Linked Series

Synthesis of the Amide-Linked Series

Synthesis of the Reverse Amide- Linked Series

Synthesis of Benzylic Functionalised Ether-Linked Series

Alternative Routes to the Triazolopyrazine Core

Triazolopyrazine telesubstitution

Biofunctionalisation

Late Stage Functionalisation

Fluoroalkene Isostere

Spectroscopy

Chirality, Relevant and Desirable Compounds

Chirality/Stereogenic Centres in This Series

Other Sources of Compounds Relevant to this Series

Desirable Compounds Not Yet Synthesised

Other Evaluations

Evaluations vs Other Organisms

Strings

Strings for Google

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