Unusual indole alkaloid-pyrrole, -pyrone, and -carbamic acid adducts from Alstonia angustifolia

Tan, Shin-Jowl and Choo, Yeun-Mun and Thomas, N.F. and Robinson, W.T. and Komiyama, K. and Kam, Toh-Seok (2010) Unusual indole alkaloid-pyrrole, -pyrone, and -carbamic acid adducts from Alstonia angustifolia. Tetrahedron, 66 (39). pp. 7799-7806.

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Three unusual natural products, viz., alstopirocine, a macroline alkaloid incorporating a substituted pyrrole moiety, pleiomaltinine, an alkaloid-pyrone adduct, and pleiomalicine, an alkaloid-carbamic acid adduct, were isolated from the Malayan Alstonia angustifolia. The alkaloid moiety in alstopirocine was alstomicine while that in pleiomaltinine and pleiomalicine was pleiocarpamine. The structures were determined by spectroscopic methods and in the case of pleiomaltinine, confirmed by X-ray diffraction analysis. Possible biogenetic pathways to these unusual compounds are presented. (C) 2010 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Alkaloid-pyrrole; Alkaloid-pyrone; Alkaloid-carbamic acid; Alstonia
Subjects: Q Science > Q Science (General)
Depositing User: Mr Faizal 2
Date Deposited: 22 Jan 2015 02:09
Last Modified: 22 Jan 2015 02:09
URI: http://eprints.um.edu.my/id/eprint/12335

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