Corynantheine compound and preparation method thereof
A technology of conanne bases and analogues, applied in the field of conanne base compounds and their preparation, to achieve the effects of high yield, convenient mass production, and good stability
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[0038] 1: Chemical synthesis and preparation
[0039] All solvents, raw materials and reagents used in the present invention are analytically pure or chemically pure unless otherwise specified; the anhydrous treatment of solvents is carried out according to conventional methods.
[0040] Instruments and methods for product separation and identification: Thin-layer chromatography silica gel GF 254 , column chromatography coarse-pore silica gel (200-300 mesh), all produced by Qingdao Ocean Chemical Factory; TLC was detected by 154nm ultraviolet; NMR was measured by Varian VXR-500 NMR instrument, hydrogen spectrum, carbon spectrum with TMS as internal standard .
[0041] 1.1 Synthesis of 1-ethoxycarbonylmethyl-1,2,3,4-tetrahydrocarboline (Formula 2)
[0042] In a 500ml round bottom flask, add 200ml of dichloromethane dissolved with 8g (50mmol) of tryptamine and 30ml of ethyl 3,3-diethoxypropionate successively, and then slowly add 12ml of trifluoroacetic acid dropwise under sti...
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