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Matthew Todd
Lived in Sydney
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Matthew Todd
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New Papers  - 
 
Special open access issue of Future Medicinal Chemistry on #schistosomiasis, edited by Conor Caffrey and with contributions from many of the key players in the field.
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Matthew Todd
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Request  - 
 
Request for medchem intuition: what to make next in Series 4. Latest data gave some important negatives, but now we're seeking tractable structures that might be positives... Planning session coming soon so that we can shortlist a Top 10, but in the meantime suggestions welcome. What are we all missing?
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Matthew Todd
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Recent Research  - 
 
Suggestions for next OSM Series 4 analogs from Mrinal Kundu, TCG Life Sciences. Comment here or there if you think these suggestions should be acted upon as replacements for, or in addition to, the current OSM top 10 most desirable compounds. If you'd like to make any of these, there's lots of synthetic precedence: http://openwetware.org/wiki/OpenSourceMalaria:Triazolopyrazine_%28TP%29_Series#Synthetic_Chemistry
Dr Mrinalkanti Kundu, Associate Director TCG Lifesciences, India, wrote to the OSM email address with some new suggestions on which molecules to make next. These suggestions have been adapted from the Christmas Top 10 list as well as all the SAR data on the wiki. Series 4 Suggestions from Mrinal ...
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Matthew Todd
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Discussion  - 
 
Should we, and can we, buy samples of compounds from CROs in open source drug discovery projects?
Background: http://malaria.ourexperiment.org/the_osm_blog/11562
Github question: https://github.com/OpenSourceMalaria/OSM_To_Do_List/issues/292
Feel free to add comments below too.
One of the key issues to solve in open source drug discovery and development programs is how to obtain physical samples of molecules for evaluation. A number of different methods can be envisaged, ranging from direct funding of synthesis (e.g. from grant money, hiring local researchers) through ...
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Matthew Todd
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Recent Research  - 
 
Background on inhibition of ATP4, the proposed target of OSM's Series 4. There is a strikingly broad array of chemotypes that inhibit this target. If we're going to understand this we need to build a pharmacophore model for the Series. This project will start soon, once we've gathered all the data, but this post contains the background. #malaria #medchem #drugdiscovery  
There is evidence from Kiaran Kirk's lab that Series 4 of the OSM Consortium inhibits ATP4, an ion homeostasis pump that has become an important target in antimalarial drug discovery. This importance stems from it being an apparently validated target with a candidate, KAE609, in the clinical ...
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Matthew Todd
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News  - 
 
New open source drug candidate series to explore, originating from GSK. We're looking at it, and anyone else is free to jump in. Promising initial data. Now seeking analogs. #tuberculosis  
In recognition of it being World TB day today, and to promote the development of urgently needed new medicines for this terrible disease I'd like to point people to a project they can be involved i...
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Matthew Todd
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Sources of Money  - 
 
Article on delinkage in antibiotic drug R&D
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Matthew Todd
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Open Notebooks  - 
 
Undergrad lab course developed at +The University of Sydney  by +Alice Williamson where students do real research and share full lab books. (They even made a bunch of videos). Imagine what we might be able to achieve if lots more uni lab courses did this.
Last semester at Sydney Uni, Alice Williamson created a new lab course in what's known as the "Special Studies Program" in Chemistry - high achieving undergrads who are given the freedom to try something new and challenging. Alice, working with Adam Bridgeman and Peter Rutledge in the School of ...
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This is fantastic! Way to go! I hope to see similar initiatives from other colleges and fields. 
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Matthew Todd
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Open Source  - 
 
Outline proposal for how to fund an #opensource research project. Need economists.
I’ve been speaking to many people about funding open source drug discovery. If there is no secrecy, and no patents, then Who Will Pay? It’s the obvious, central question behind the whole enterprise...
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+Thomas Arildsen thanks! 
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Matthew Todd
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Paper  - 
 
Github repository set up for the writing of the first OSM paper on Series 4. Should allow anyone to contribute directly on that platform, or (more old school) download files, alter them and then ask for them to be uploaded by emailing them to opensourcemalaria@gmail.com. Either way this ought to make the assembly of the paper in a submission-ready form easier, as well as adding robust version control.
OSMSeries4Paper1 - Working Repository of Files Related to Open Source Malaria Series 4, Paper 1
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Matthew Todd
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Request  - 
 
Call for help in synthesising the next most-wanted compounds in OSM Series 4. After much consideration, these are the ones needed. A few milligrams of each are required for biological evaluation. As usual, contribution of samples, and the associated data, makes the contributor eligible for possible inclusion as an author on the resulting paper. The compounds have a lot of synthetic organic precedence behind them and are available in 4 steps from a commercial starting material. #malaria #openscience  
The 'top ten' Series Four compounds have been defined as: I (Alice) will firstly take care of compounds 1 - 4 at Sydney University meaning that we'd like to open up compounds 5 - 10 for synthesis by the community. Two proposed synthetic routes for 5 - 10 could be accessed are: ...
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Greetings!
I have some humble comments on the 'OSM Christmas Top 10 List'.

[i] Comparing head to head MMV 639565  & 670945 with MMV 668959 & 669009 [changing 4-Cl/4-OCHF2-Ph to either THP or N-linked Piperidine], there is a drastic loss in potency; that probably suggests the need of pi-pi interaction/aryl group at that position.

In that context, compounds S, U & W may not be beneficial; moreover, the presence of the -OH group may render metabolic instability as we have seen in MMV 670947 [related].

[ii] Keeping in mind the potency and hERG data MMV 670936, the compound V [From the Top 10 List] looks interesting; though -OH group will probably improve the potency, it may lead to metabolism.

Accordingly, modifying -OH to -OMe may avoid these issue [also we know, -OMe is well tolerated in MMV 669844]. Secondly, 3, 5-di fluorophenyl may be used instead.

Look forward to the feedback.
Best regards.
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Matthew Todd
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Discussion  - 
 
WashPo article on the innovation value/power, or not, of patents
Technology moves so quickly today that patents only hold back our best minds.
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Have him in circles
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I research and teach organic chemistry at The University of Sydney. Open Science, Neglected Tropical Diseases, Asymmetric Catalysis, Synthetic Organic Chemistry, Coordination Chemistry.
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