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Ketamine salts solubility

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In my recent courses we've been taught that the process used to be based on action of natural products but it has shifted to elucidation of disease associated signaling pathways, crystalization of proteins, and rational computer aided design based on crystal structure
 
Well that's interesting - approaching the problem from the opposite direction. I cannot speak for proteins (although I read they are 'self organizing') but with small-molecule drug design, it's been recognized that binding may not occur in the minimum-energy conformation so now near-minimum conformations are covered by in-silico training-sets.

A good example would be the first synthetic opioid - pethidine (Demerol). Now the piperidine ring can adopt either boat or chair conformation but it's been shown that the hydrogen-bond between the O of the ester and the N are key to binding. That's why I linked to that paper on Spiridone (or specifically, the link to the paper referenced in the paper covering them.

People always seem to think such compounds are essentially flat and exist in that 2D form. But when you realize that the ketone moiety actually bends over the 3,3-diphenyl motif, you realize the active conformation is UTTERLY unlike those pictures which are simply used as a diagram rather than a map.

Another one I recall from early in my education was HOW psilocin could be orally active. How does it cross the BBB. Well it turns out that the tryptamine chain bends back over the indole and the 4-OH and N form a hydrogen-bond.

But truly - while crystalline forms of proteins had been used to elucidate structure via X-ray crystallography, I don't think many people were using such data to find targets.

But natural-->rational design-->high throughput screening-->in-silico and AI were the technologies employed for small-molecule drug design. Most drugs are still small-molecule but their ARE some powerful new techniques.
 
2-(4-methylphenylmethanone-1-yl)-(4,5-dihydro-1H-imidazole).png


SKEETA_ROCK
2-(4-methylphenylmethanone-1-yl)-(4,5-dihydro-1H-imidazole)

2-(3,4-methylenedioxyphenyl)methyl-(4,5-dihydro-1H-imidazole).png


EXHIBIT_X
2-(3,4-methylenedioxyphenyl)methyl-(4,5-dihydro-1H-imidazole)

2-phenylmethyl-(4,5-dihydro-1H-imidazole).png


SPEEDY_GONZALES
2-phenylmethyl-(4,5-dihydro-1H-imidazole)

2-phenylmethyl-(indole).png


ELON_MUSK
2-phenylmethyl-(indole)
 
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The in silico design is definitely newer, the med chem students at my school are primarily computational chemists. They take organic classes but it's all stuff like docking and molecular dynamics, they have other labs synth their compounds for testing after high throughput virtual screening against protein structures obtained from crystals. It'll be interesting if we can one day get accurate folded structures without crystallization
 
You have to remember that when I studied medicinal chemistry, in-silico modelling didn't exist. People still built training-sets by hand, calculating the minimum-energy conformations but it was a VERY large undertaking. What ChemOffice will do in an hour would take many people many weeks of work. There are many tools for calculating docking conformity but like all in-silico models, they estimate and different tools will give different estimates. It's still likely to be the most efficient way to design new medicines but boy, do they throw up compounds that are complicated to make.

The fact that a drug that costs $100,000/Kg to make is only slightly better than one that only costs $1000/Kg to make is not considered, as far as I know. So while their is no argument that they ARE better, they aren't likely to be accessible by the majority of the peoples of the world.

Did you know that in the 1960s Janssen made a decision to stop researching the 3,3-diphenyl heptanone class of opioids in favour of the phenylpiperidine class because the latter is synthetically simpler. R-4066 was the kind of potency he sought but far, far too costly to make whereas fentanyl derivatives are quite cheap.

Since then a few other researchers have simplified the synthesis of 3,4-dihydro-2H-spiro[naphthalene-1,4'-piperidine] BUT it's still not cheap. I'm sure if Spiridone (or rather the acetyl ester of the methadol derivative) found a widespread commercial use, researchers WOULD find even cheaper routes as someone could get a royalty.

If you didn't know, their are specialist chemical companies who look at popular medicines and try to find cheaper syntheses. They don't MAKE the medicines, their income comes from selling or licencing their patented routes.

The entire drug development cycle is VERY complex indeed.
 
A gravity bong, which can be jerry rigged using a 2 L bottle, is an advanced pot smoking device which utilizes water and air pressure to move the smoke.

kiely,

A 'hydrogen bond' exists between a H atom and either F, O, or N. It is where the hydrogen has a partial plus charge in its orbital which stabilizes itself by cozing up with a lone pair of electrons from either F, O, or N.
 
When You're Trying To Draw Cocaine, But Forget One O And Somehow End Up With A New Creation.

N-methyl-2-carbomethoxy-3-(benzoyl)-8-azabicyclo%5b3.2.1%5doctane.png


CATHINONEICOCAINE
N-methyl-2-carbomethoxy-3-(benzoyl)-8-azabicyclo[3.2.1]octane

Note: The acetyl (R-(C=O)-CH3) functional group plays an important role in Fragrance Chemistry.

1-(3,4-diacetylphenyl)-1-(2-piperidinyl)-2-oxopropane.png


TRIACETYL-2-BZP
1-(3,4-diacetylphenyl)-1-(2-piperidinyl)-2-oxopropane

^--Is It Mellifluous? Possibly.

1-(3,4,5-triacetylphenyl)-2-aminoethane.png


THE_VAMPIRE_LESTAT
1-(3,4,5-triacetylphenyl)-2-aminoethane
 
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N-cyclopropylmethyl-2-acetyl-3-benzoyl-8-azabicyclo%5b3.2.1%5doctane.png


THE_WRIGHT_STUFF
N-cyclopropylmethyl-2-acetyl-3-benzoyl-8-azabicyclo[3.2.1]-octane

Learn To Fly!

2-phenyl-3-benzoyl-8-azabicyclo%5b3.2.1%5doctane.png


A_LIL_IFFY but so are the lottery & the stock market
2-phenyl-3-benzoyl-8-azabicyclo[3.2.1]octane

N-methyl-2-carbomethoxy-3-carbophenoxy-8-azabicyclo%5b3.2.1%5doctane.png


3-ISO-ESTER-COCAINE
N-methyl-2-carbomethoxy-3-carbophenoxy-8-azabicyclo[3.2.1]octane

1-(2,6-dimethylphenyl)-1-methoxy-N-allyl-2-aminopropane.png


SAGACIOUS_THO_SATYRICAL_SALAMANDER
1-(2,6-dimethylphenyl)-1-methoxy-N-allyl-2-aminopropane

N-allyl-2-carbomethoxy-3-benzoyloxy-8-azabicyclo%5b3.2.1%5doctane.png


INDRA
N-allyl-2-carbomethoxy-3-benzoyloxy-8-azabicyclo[3.2.1]octane
 
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Got another one. 4-(2-Aminoethyl)Methyl-1-Phenylpropan-2-amine. It's a cross between Dopamine and Meth.
 
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Haven't seen any mentions of this drug or its combination products. Anyone have information on Samidorphan. Information on this one seems to be very much limited, anyone with experience should share if they are comfortable.


Best wishes and stay safe!
Azed
 
I took this new drug for 3 weeks. Extreme dysphoria. One of my least favorite drugs. Had to discontinue.
 
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