phytochemical studies:

* N-methyl-tetrahydroharman from a. complanata Johns, Lamberton & Sioumis, Aust J Chem #19: 1539-40, 1966.
In this study leaves and stems were extracted and the alkaloids obtained analysed. It was found that a. complanata yielded about 0.3% alkaloids (3.4 gm from 1 kg of plant material). Upon analysis it was found to be N-methyl-tetrahydroharman, with traces of tetrahydroharman.

* Authors studies 1995-6

In may I collected foliage of a. complanata in NE NSW. I extracted some of the plant material using the same process I have used on bark for isolating the alkaloids. The solution smelt and looked different to a. obtusifolia, being a dull grey-green rather than deep red of a. obtusifolia bark. When I added ammonia to basify it, it developed bright yellow-green fluorescence. After adding the solvent the aqueous phase returned to the dull grey-green colour. After separating and evaporating the solvent there was about 0.4 g of a creamy brown semi-crystalline residue, with distinctive smell and bitter alkaloidal taste.
Later I took the remaining plant material (580 g) and extracted it using a different process, based on one that had previously been used to isolate b-carboline alkaloids from Peganum harmala seeds (Hasenfratz, Ann. Chim, (10) 7 151, 1927), based on the fact that the H Cl salts of the alkaloids are insoluble in cold NaCl solutions. I soaked the ground plant material in acetic acid soln for about 3 days, with shaking and stirring. Then filtered off the plant material and added 100 gms/ l of NaCl to the acetic acid solution and shook vigorously. After being left to sit for some time a precipitate layer formed on the bottom of the container. I poured off most of the aqueous phase, then redissolved the precipitate in warm water and again added salt at the same rate as before. After sitting for awhile there was again a precipitate layer, I poured off most of the fluid and let the precipitate dry out completely. It came to about 2.5 gm of a pale cream powder, which may be the HCl salt of the b-carboline alkaloids reported to occur in a. complanata. Which are N-methyltetrahydroharman and tetrahydroharman.
As an experiment I ingested about 100 mg of the second extract along with a couple of Ďsmokingí doses of the obtusifolia alkaloids. I didnít feel a great deal from the first dose, though when smoking some of the obtusifolia alkaloids a bit later, the length and experience seemed to be effected. I took another dose later on but felt little again, there didnít seem to be enough MAO inhibition to orally activate the obtusifolia alkaloids.
Later I, and others, took some of the first (base) extract, this seemed to have more activity than the other extract, I could feel it a bit in my stomach similar to when Iíve had syrian rue. By this stage we had also smoked a bit of the obtusifolia alkaloids, so it was more a matter of trying to see if these alkaloids potentiated or effected the length or course of smoking the tryptamine alkaloids.
Generally it was an interesting time, though the effects were not very strong and there seemed to be not enough MAO inhibition to orally activate the tryptamine alkaloids, but none of us died or suffered bad side-effects or after-effects, apart from in my case a generally clear and glowing feeling for the next couple of days. Wether the second extract is in fact the HCl salts of the alkaloids reported in a. complanata I canít say.
I have also been more recently informed that some people were actually able to obtain a tryptamine, and specifically DMT from the bark of this species in fairly reasonable yield. This is the first time I have heard of anyone trying an extract on the bark. Much remains to be seen with this species.