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Dimethoxytrityl, often abbreviated DMT, is a protecting group widely used for protection of the 5'-hydroxy group in nucleosides, particularly in oligonucleotide synthesis. [ 1 ] It is usually bound to a molecule, but can exist as a stable cation in solution, where it appears bright orange.
Dimethoxytrityl, [bis-(4-methoxyphenyl)phenylmethyl] (DMT) — Removed by weak acid. DMT group is widely used for protection of 5'-hydroxy group in nucleosides, particularly in oligonucleotide synthesis. Methoxytrityl [(4-methoxyphenyl)diphenylmethyl] (MMT) – Removed by acid and hydrogenolysis.
There are three main methods for the preparation of nucleoside phosphoramidites. DMT = 4,4'-dimethoxytrityl; B = optionally protected nucleic base; R = phosphate protecting group The common method involves treatment of a protected nucleoside bearing a single free hydroxy group with phosphorodiamidite under the catalytic action of a weak acid.
The DMT group is removed with a solution of an acid, such as 2% trichloroacetic acid (TCA) or 3% dichloroacetic acid (DCA), in an inert solvent (dichloromethane or toluene). The orange-colored DMT cation formed is washed out; the step results in the solid support-bound oligonucleotide precursor bearing a free 5'-terminal hydroxyl group.
6-MeO-DMT, or 6-methoxy-N,N-dimethyltryptamine, also known as 6-OMe-DMT, is a serotonergic drug of the tryptamine family. [ 1 ] [ 2 ] It is the 6- methoxy derivative of the serotonergic psychedelic N , N -dimethyltryptamine (DMT) and is a positional isomer of the serotonergic psychedelic 5-MeO-DMT .
As with DMT, CYB004 is a potent agonist of the serotonin 5-HT 2A receptor and produces psychedelic-like effects in animals. [ 1 ] [ 5 ] [ 3 ] However, CYB004, due to its deuteration, is more resistant to metabolism than DMT and shows a longer elimination half-life (by 2.5- to 2.9-fold) and slower clearance (by 38 to 55%) in animals. [ 3 ]
[1] [4] [8] In relation to this, 5-MeO-DMT has been described as an "atypical" psychedelic and as producing subjective effects notably distinct from those of DMT and other psychedelics, for instance having a relative lack of visual effects. [5] [1] [4] Like DMT, 5-MeO-DMT has a very rapid onset of action and short duration.
N,N-Dimethyl-4-methylthioamphetamine (DMMTA or N,N-dimethyl-4-MTA; code name PAL-1062), also known as 4-methylthio-N,N-dimethylamphetamine (4-MTDMA), is a monoamine releasing agent (MRA) of the amphetamine family related to 4-methylthioamphetamine (4-MTA) and 4-methylthiomethamphetamine (4-MTMA or NMMTA).