The mob are lining up trumpeting Lysergamides as a possible next-gen RC and there entitled and opinion. Trouble is that researchers have been there done that and formed unexpected total interruption of hallucinogenic activity from very small modification and substitution. Along with promising increases in dopaminergic potency that could be developed for medical applications.
The tetracyclic framework no a aromatic two-ring indole nucleus along with its carboxy at 8-position present several locations given to modified that will effect structure-activity. Unfortunately more often then not the results were poor.
(Brimblecombe and Pinder 1975).
Substitution @ N(1) Steep attenuation or abolishes hallucinogenic activity.
Substitution @ C(2) With halogens (Bromine, Iodine, etc.) abolishes hallucinogenic activity coupled with antagonize effect of LSD.
(Pffaf et al., not submitted for peer revue).
Substitution @ C(12) or 13 or 14 is a formidable task. Unperturbed 12-hydroxy prepared years earlier proved a disablement, a 20 percent reduction in LSD potency.
Reduction @ 9, 10-double bond abolishes hallucinogenic activity.
Stereochemistry was found to be the mast critical for the lysergic acid molecule.
(R)Stereochemistry inversion @ C(5) and C(8) abolishes hallucinogenic activity. [C(5) inversion product: l-lysergic acid] [C(8) Epimerisation product: isolysergic acid]
You'll notice I haven't mentioned substitution @ N(6) nitrogen, this is because I'm still waiting on a translation of (Nakahara and Niwaguchi 1971; Niwaguchi et al. 1976) there papers are needed to make companionship with the paper (Hoffman 1987).
When I've researched to by comfort Hoffman's ummarized paper we'll leave the EFFECTS OF N(6) SUBSTITUTION alone for now.

The tetracyclic framework no a aromatic two-ring indole nucleus along with its carboxy at 8-position present several locations given to modified that will effect structure-activity. Unfortunately more often then not the results were poor.
(Brimblecombe and Pinder 1975).
Substitution @ N(1) Steep attenuation or abolishes hallucinogenic activity.
Substitution @ C(2) With halogens (Bromine, Iodine, etc.) abolishes hallucinogenic activity coupled with antagonize effect of LSD.
(Pffaf et al., not submitted for peer revue).
Substitution @ C(12) or 13 or 14 is a formidable task. Unperturbed 12-hydroxy prepared years earlier proved a disablement, a 20 percent reduction in LSD potency.
Reduction @ 9, 10-double bond abolishes hallucinogenic activity.
Stereochemistry was found to be the mast critical for the lysergic acid molecule.
(R)Stereochemistry inversion @ C(5) and C(8) abolishes hallucinogenic activity. [C(5) inversion product: l-lysergic acid] [C(8) Epimerisation product: isolysergic acid]
You'll notice I haven't mentioned substitution @ N(6) nitrogen, this is because I'm still waiting on a translation of (Nakahara and Niwaguchi 1971; Niwaguchi et al. 1976) there papers are needed to make companionship with the paper (Hoffman 1987).
When I've researched to by comfort Hoffman's ummarized paper we'll leave the EFFECTS OF N(6) SUBSTITUTION alone for now.
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