The search for a safe, effective, and nonaddictive replacement for morphine for the treatment of severe pain has occupied scientists for over a hundred and fifty years. A most promising recent discovery in this area is N-cyclobutylmethylnoroxymorphone (nalbuphine = l), an analgesic now undergoing ex
Biomimetic synthesis of neodihydrothebaine and bractazonine from thebaine
โ Scribed by Hubert G. Theuns; Guus F. La Vos; Michael C. ten Noever de Brauw; Cornelis A. Salemink
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- French
- Weight
- 130 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Photochemical irradiation of the morphinan alkaloid thebaine l_, followed by reduction, affords the dibenz[d,f]azonine alkaloids neodihydrothebaine 2 and bractazonine 3, in a sequence paralleling the proposed biosynthesis of these alkaloids in Papaver bracteatum. Recently, we reported the finding of two unusual alkaloids in Papaver bracteatum
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## Study on Synthesis of Thebaine Derivatives LIU, He\*(ๅๆฒณ) LIU, Chun-He(ๅๆฅๆฒณ) WU, Bo(ๅดๆณข) ZHONG, Bo-Hua(ไปฒไผฏๅ) GONG, Ze-Hui(ๅฎซๆณฝ่พ)
A synthesis of thebaine is described where the C-1 position is labelled with tritium to specific activity of 16 Ci/mmole. From codeine (a, 1iodocodeine ( 1 ) was prepared and converted to 1-iodothebaine (T, in 3 steps. The subsequent key reaction was the selective hydrogenolysis of the carbon-iodine