7-Polyacylated delphinidin 3,7-diglucosides from the blue flowers of Leschenaultia cv. Violet Lena
7-Polyacylated delphinidin 3,7-diglucosides from the blue flowers of Leschenaultia cv. Violet Lena
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DOI：
10.1016/j.phytochem.2006.11.012
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发表时间：
2007-03-01
期刊：
影响因子：
3.8
通讯作者：
Honda, Toshio
中科院分区：
文献类型：
--
作者：
Saito, Norio;Tatsuzawa, Fumi;Honda, Toshio
从青花蓝花中分离得到三酰基花青素、青花蓝花青素1和2 （LBAs 1和2）。简历。紫百合科植物，其中lba1为主要色素。利用化学和光谱方法鉴定了LBA I的结构为3-O-[6-O-（丙二醇基）- β - d -葡萄糖苷]-7- o -[β - d -（4-O-（p - d -葡萄糖苷）-反式咖啡基）- β - d -葡萄糖苷]。由于lab2的分离量较少，因此其结构暂定为delphinidin 3-（丙二酰葡萄糖苷）-7-[（葡萄糖基-对香豆醇基）-（葡萄糖基咖啡基）-（葡萄糖基-对香豆醇基）-葡萄糖苷]或delphinidin 3-（丙二酰葡萄糖苷）-7-[（葡萄糖基-咖啡基）（葡萄糖基-对香豆醇基）-葡萄糖苷]。虽然在毛茛科、桔梗科和菊科中也发现了7-聚酰基花青素，但这是第一次在桔梗科中发现7-聚酰基花青素。此外，仅在桔梗（桔梗科）花中发现了飞鸽苷3-糖苷-7-二（糖基咖啡基）-糖苷。从化学分类学的观点来看，古柏科可能与钟柏科关系密切。(c) 2006 Elsevier Ltd.版权所有。
The triacyl anthocyanins, Leschenaultia blue anthocyanins 1 and 2 (LBAs 1 and 2) were isolated from the blue flowers of Leschenaultia R. Br. cv. Violet Lena (Goodeniaceae), in which LBA 1 was present as a dominant pigment. The structure of LBA I was elucidated to be delphinidin 3-O-[6-O-(malonyl)-beta-D-glucopyranoside]-7-O-[beta-D-(4-O-(beta-O-(4-O-(P-D-glucopyranosyl)-trans-caffeoyl)-beta-D-glueopyranosyl)-trans-caffeoyl)-beta-D-glucopyranoside] by application of chemical and spectroscopic methods. Since LAB 2 was isolated in small amount, its structure was tentatively assigned as either delphinidin 3-(malonylglucoside)-7-[(glucosyl-p-coumaroyl)-(glucosylcaffeoyl)glucoside] or delphinidin 3-(malonyl-gluco side)-7-[(glucosyl-caffeoyl)(glucosyl-p-coumaroyl)-glucoside]. This is the first report of the occurrence of 7-polyacylated anthocyanins in the family of Goodeniaceae, although others have been found in the families of the Ranunculaceac, Campanulaceae, and Compositae. Moreover, delphinidin 3-glycoside-7-di-(glucosylcaffeoyl)-glucoside has been reported only in the flowers of Platycodon grandflorum (Campanulaceae). From a chemotaxonomical viewpoint, the Goodeniaceae may be closely related to the Campanulaceae. (c) 2006 Elsevier Ltd. All rights reserved.