N&PD Moderators: Skorpio | someguyontheinternet
[...] This model has new been used successfully for predictive purposes . For example, 3,5-dimethoxy-4-bromophenylisopropylamine, compound 27, was predicted to have high potency based on its log P value and in vitro activity in this preparation for its 2 carbon homolog 5 . Subsequent testing revealed that this compound elicits central effects in man at a dose in the range 3-6 mg [...]
As suggested by Nichola and Dyer (2) 3,4,5-substituted compounds are about as active in this preparation ae 2,4,5-aubatituted compounds of comparable log P . Thin work however, shore that this is independent of
whether or not the compound possesses an alpha methyl group. (Ia contrast an alpha ethyl destroys hallucinogenic activity, reduces 5-HT agoniat activity and imparts 5-ST antagonist activity to the molecule (9)
So, actually Shulgin as already asigned trivial names to the halogen analogues of 3C-X. That is 3C-C, 3C-I and 3C-B etc ad nauseam.Pikhal said:Very few of the homomescaline phenethylamines have been synthesized as their three-carbon chain counterparts, the corresponding analogues of amphetamine. And only three of them have been explored in man (four, if you count the amphetamine analogue of mescaline itself, TMA). The obvious names for these compounds have, unfortunately, already been used. It would be logical to use the letter M for a methoxy, and the letter E for ethoxy, etc. and simply read the groups from around the ring. But this is the naming system for the 2,4,5-trisubstituted amphetamines. MEM is, for example, 2,5-dimethoxy-4-ethoxyamphetamine (in sequence, methoxy, ethoxy, methoxy reading around the ring, and a fascinating compound talked about at length in this book), so this term cannot represent 3,5-dimethoxy-4-ethoxyamphetamine.
A truly simple code employs the length of the carbon chain. The phenethylamine chain is two carbons long, and the amphetamine chain is three carbons long.
If a drug has been initially developed (and initially named) as an amphetamine derivative (three carbon chain) then the two-carbon chain analogue will use the original name (or a symbolic part of it) with the term 2C ahead of it. The two-carbon analogue of DOB (a three-carbon chain compound) will become 2C-B. DOI becomes 2C-I, DON becomes 2C-N, and DOET becomes 2C-E. Each of these is a substituted amphetamine derivative lacking one carbon atom, thus becoming a phenethylamine derivative. Most of these have 2,4,5-substitution patterns.
And if a drug has been initially developed (and initially named) as a phenethylamine derivative (two carbon chain) then the three-carbon chain analogue will use the original name with the term 3C ahead of it. The three carbon analogue of E (escaline, a two-carbon chain compound) will become 3C-E. P becomes 3C-P and CPM becomes 3C-CPM. Most of these have 3,4,5-substitution patterns.
Thus, R2-CS implies that a known amphetamine drug has been shortened to a phenethylamine, and R3-CS inplies that a known phenethylamine has been lengthened to an amphetamine. A great number of the former have been made and have proven to be most rewarding. Only a few of the latter are known, but most of them will eventually prove to be potent psychedelics.
And if a drug has been initially developed (and initially named) as a phenethylamine derivative (two carbon chain) then the three-carbon chain analogue will use the original name with the term 3C ahead of it. The three carbon analogue of E (escaline, a two-carbon chain compound) will become 3C-E. P becomes 3C-P and CPM becomes 3C-CPM. Most of these have 3,4,5-substitution patterns.
From the PIHKAL entry for DESOXY:
"A mescaline analogue with a bromo atom in place of the 4-methoxyl group is an analogue of mescaline in exactly the same way that DOB (a very potent am-phetamine) is an analog of TMA-2 (the original trisubstituted amphetamine). This analogue, 3,5-dimethoxy-4-bromoamphetamine, has been found to be a most effective serotonin agonist, and it is a possibility that it could be a most potent phenethylamine. But, as of the present time, it has never been assayed in man."
I'm absolutely not saying DOB should be called 3CB, and I'm not saying they have double names. No, I'm pretty sure the DO's were developed before the 2C's, think DOM! which was first synthesized by Shulgin in 1964.This couldn't be true of 2C-B to 3C-B (+ same for other halogens), because I'm pretty sure the 2-carbon homologues of these were developed first (i.e. 2C-B, 2C-C, 2C-I ) and alpha-methylating these yields the names DOB, DOC and DOI as chosen by Shulgin, and consequently not 3C-B, 3C-C and 3C-I which were not chosen.
And it is not the case either that he gave these compounds multiple names as he sometimes does (DOB has a whole list, including 4-Bromo-DMA for example), but I have just checked PIHKAL and the Shulgin Index and 3C-B is not another name for DOB.
First of all, in the naming system of amphetamines he describes in the first quote from Pihkal that I quoted, he specificaly says it's not about wether the compound in question has the 2,4,5-substitution pattern or the 3,4,5-substitution pattern. It's about what was developed first ! The 2c or the amphetamine.In the case of halogens, these 3C-X names are not fit for 4-X-3,5-DMPEA either because then the names would implicate the 2,4,5 substituted analogues and not the 3,4,5 substituted ones. That is where it would get hairy indeed, and as you say not clear or logical. You are right to say that it could be possible for 4-chloro-3,5-dimethoxyphenethylamine to be named chloroescaline, chlorescaline, chloroscaline or chloromescaline and the amphetamine homologue could indeed be called 3C-C, but this is not the case i.e. I cannot find anywhere that Shulgin actually gave these names and I recommend against it (if I may be so rude). It would give confusion, like I pointed out starting this paragraph. If anything I'd say, let's name chloromescaline like Sekio says or otherwise chloroscaline (omitting the E at least does not imply any ethyl moiety involved) CM for short and the amphetamine 3C-CM... doing the same with other halogen analogues. Let me check the Shulgin Index if CM is taken. Well not that it'd matter since it is not up to me to name compounds, but just for fun?
Considering 3,4,5-MBM is a way for Shulgin to designate 4-bromo-3,4-dimethoxyphenethylamine along the same lines of 'MEM' it is quite likely the chloro analogue would be 3,4,5-MCM or plain MCM. Let's also not forget that bromomescaline is a name for 2C-B and not actually the 3,4,5-subbed MBM. To add to the confusion 8( [/I]
Escaline entry in Pihkal said:The obvious names for these compounds have, unfortunately, already been used. It would be logical to use the letter M for a methoxy, and the letter E for ethoxy, etc. and simply read the groups from around the ring. But this is the naming system for the 2,4,5-trisubstituted amphetamines. MEM is, for example, 2,5-dimethoxy-4-ethoxyamphetamine (in sequence, methoxy, ethoxy, methoxy reading around the ring, and a fascinating compound talked about at length in this book), so this term cannot represent 3,5-dimethoxy-4-ethoxyamphetamine.
And also the name 3C-C came up in the OP
OK I lolled.
I agreeApparently you are comfortable with other names for the suggested compounds than I am. "Agreeing to disagree" tends to sound lame but considering this is about nomenclature that has a somewhat arbitrary element in it regarding the ultimate choices, and not about true or untrue facts, there is nothing else to be proven.
I totally get your point. And I also understand why you dislike the whole "3C" naming structure, because they actually imply that it's a homologue of a 2C-X. Which it is not. One would think that 3C-P was the amphetamine homologue of 2C-P for instance. So yeah, as I said, Shulgin did make a mess of the names here.Why I (reluctantly) accept 3C-E but not 3C-C is because E already actually stands for escaline and 3C-E would mean: 3-carbon homologue of escaline.
C does not necessarily mean chloroscaline. It can, and I am a bit tired of arguing over it... but it can also designate other chloro-PEAs.
An argument why 3C-C would still be acceptable is that it could not be the 3-carbon homologue of 2C-C since that is already called DOC. Then again, alternative names are possible.
it might be the case with DOPR, he doesn't say. But it's definitely not the case with DOET--->Also, with the DOX a resolution is offered: the ethyl and propyl are called DOET and DOPR, I think because DOE would suggest the 3,4,5-substituted compound following the E for escaline (i.e. 3C-E) and DOP that same way.
Calling them DOET and DOPR makes them exceptions that follow the typical DOX 2,4,5 substitution pattern.
Pihkal entry on DOET said:The original code for this compound was DOE, which was completely logical based on DOM being the methyl member of this series (DO for the removal of the oxygen, desoxy, and M for putting a methyl in its place). And the putting of the ethyl thence should be DOE. This was fine until it was pointed out to me by a close colleague that DOE was a classic abbreviation for desoxyephedrine, a synonym for methamphetamine.
Maybe instead of "it is not called 3C-B", I could have said that it might be called that by some. But if you will just check isomerdesign and other references you will see it is called 4-Br-3,5-DMA. We can go on all day about agreeing to that or not, but who exactly are we to reject names that have already been given? That is why I was surprised that you 'disagreed' with me in the beginning: not because I couldn't be wrong, but because it was not my judgement call and I just basically quoted isomerdesign.
I was wondering why only 3c-e and 3c-p exist. I have never heard of 3c-b, 3c-i, 3c-c. Would they be active?
No, they aren't.Uh.. They do. They're DOB, DOI and DOC.
oh I see this was already pointed out and then got very complicated and confused for reasons I don't understand.
And the discussion is about wether 3,5-dimethoxy-4-Chloro-amphetamine, for instance, could be called 3C-C, or if it's too misleading.
This thread makes a series of high-pitched whistling sounds as each of the posts flies over my head.![]()