RwAI# 9YlmiE319 OF AGP1DOGPEEMIxE\*1 Imue, Y. Nagai(de Sea), T. Olehi, M. Terashima, 0. Yonemitm and Y. Kanaoka
The synthesis of a racemic stereoisomer of aspidospermine
β Scribed by Yoshio Ban; Ikuo Iijima
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- French
- Weight
- 135 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
A stereoisomer of ptychanolide 1 was synthesized by a method which includes an a-alkynone cyclization. Ptychanolide, a sesquiterpenoid constituent of the Liverwort Ptychanthus striatus (Lehm. et Lindenb.) Nees isolated by Takeda et al.,' was shown by degradation to have structure 1, which contains
TEE alkaloid 8tvpidoepermine obtained from the bark of Aspidosperma auebraaho blanoo and first studied by Ewina' in 1914 has been the subjeot of aotlve chemioal study shoe 1947. It has proved to be a member of that increasingly large bixly of natural product8 whose molecular structure eludes un8mbig
IN Part II2 vs outlined the development of the partial structural formula (I) for the alkaloid arpidoqmmine. The additional ohemiaaf widenoe domcribed iu thim Letter oohfirms thome oonolusious and has a oonsiderabla further beariug on the struoture. While mainly limited to elucidation of the nature