Investigation of a betainic alkaloid from Punica granatum

被引：25
作者：
Schmidt, A
Mordhorst, T
Nieger, M
机构：
[1] Tech Univ Clausthal, Inst Organ Chem, D-38678 Clausthal Zellerfeld, Germany
[2] Univ Bonn, Inst Inorgan Chem, D-53121 Bonn, Germany
来源：
NATURAL PRODUCT RESEARCH | 2005年 / 19卷 / 05期
关键词：
mesomeric betaine; solvatochromism; pi-complex; pyridinium phenolate;
D O I：
10.1080/14786410500034949
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Spectroscopic investigations reveal that a hydroquinone pyridinium alkaloid isolated from the leaves of pomegranates Punica granatum L. (X-ray) exists as a mixture of a conjugated and a cross-conjugated heterocyclic mesomeric betaine in aqueous and DMSO-d(6) solution. Twofold deprotonation yields an anionic tripole.
引用
收藏
页码：541 / 546
页数：6
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