A new type of monoterpenoid indole alkaloid precursor from Alstonia rostrata |
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| Authors: | Cai Xiang-Hai Bao Mei-Fen Zhang Yu Zeng Chun-Xia Liu Ya-Ping Luo Xiao-Dong |
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| Affiliation: | State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China. xhcai@mail.kib.ac.cn |
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| Abstract: | Currently, all monoterpenoid indole alkaloids (MIAs) have been derived from strictosidine, which originates from the condensation of tryptophan with secologanin in a 1:1 ratio. However, our phytochemical research on Alstonia rostrata revealed a potential new precursor for these compounds. We isolated the alstrostines A and B, and it was determined that they were derived from tryptophan and secologanin in a 1:2 ratio, which supported the presence of a new type of MIA precursor. |
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