Total synthesis of the proposed structures of hyacinthacines C2, C3, and their C5-epimers |
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| Authors: | Tetsuya Sengoku |
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| Institution: | Department of Materials Science, Faculty of Engineering, Shizuoka University, Johoku 3-5-1, Naka-ku, Hamamatsu 432-8561, Japan |
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| Abstract: | Synthesis and structural confirmation of highly oxygenated pyrrolizidine alkaloids, hyacinthacines C2 (1S,2R,3R,5R,7S,7aR)-3,5-hydroxymethyl-1,2,7-trihydroxypyrrolizidine], C3(1S,2R,3R,5S,7R,7aR)-3,5-hydroxymethyl-1,2,7-trihydroxypyrrolizidine], and their C5-epimers were achieved on the basis of the highly divergent method employing (S)-(−)-2-pyrrolidone-5-carboxylic acid as the starting material. |
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