File Name : suppl scheme 1.tiff
Caption : reaction of 6-(3,4-dimethoxyphenyl)-1,4-diaminohexa-2,5-diene with ethyl formimidate and base hydrolysis of acanthoine
File Name : suppl fig 1.tif
Caption : time course of acid promoted conversion of (6s)-5-formiminotetrahydrofolate (2) to 5,10-methenyltetrahydrofolate (7)
File Name : suppl fig 2.tif
Caption : beer’s law dose-response correlation for (6rs)-5,10-methenyltetrahydrofolate (rs-7) hydrochloride
File Name : suppl fig 3.tif
Caption : uv spectra from uplc/uv analysis of ampouled 2.(a) representative uv spectrum for (6s)-5-formiminotetrahydrofolate (2); (b) representative uv spectrum for (6rs)-5,10-methenyltetrahydrofolate (rs-7)