Chemotaxonomic Studies in Cnidoscolus (Euphorbiaceae). I. Flavonol Glycosides of the C. tubulosus Complex

Abstract

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EkFLS overexpression promotes flavonoid accumulation and abiotic stress tolerance in plant

“…Euphorbia kansui Liou, a perennial herb of the genus Euphorbia, can synthesize many effective constituents including terpenes (diterpenes, triterpenes), steroids, and flavonoids (Li et al, 2010). It has been reported that the flavonoids in Euphorbia mainly include quercetin and kaempferol which are classified into flavonols (Furlan et al, 2015;Kolterman et al, 1984;Ying et al, 2009). In this study, EkFLS, a key enzyme in the synthesis of flavonols, was cloned from E. kansui, and then used for transgenic experiments in Arabidopsis.…”

Flavonoids, Coumarins and Triterpenes from the Aerial Parts of Cnidoscolus texanus

“…Kolterman et al found some flavone and flavonol glycosides to be useful in the taxonomy of Cnidoscolus [1]. In this study, flavanones and flavanonols (1 ± 7) are isolated from the genus for the first time.…”

“…Its UV spectrum was very similar to that of 1, which showed a characteristic flavanone band II absorption at 287 nm and a coumaroyl group absorption at 315 nm. In its 1 Besides a set of sugar moiety, the 1 H-NMR spectrum of 2 exhibited signals of two trans-coumaroyl groups. By HPLC analysis of hydrolysis products from compound 2, the sugar group was detected as glucose, and p-coumaric acid was also detected by comparison with an authentic sample.…”

“…Cnidoscolus Pohl (Euphorbiaceae) is a neotropical genus of approximately 50 species [1]. The plants have been used as vegetables, for rubber production, or in folk medicine [2].…”

“…To date, some chemical compounds have been isolated from Cnidoscolus, such as triterpenes [2], [4], [5], [6], flavonoids [1], [7], and some novel cyclopropane, cyclobutene, benzocycloheptene, and isoprenoid derivatives [8]. However, there are only two phytochemical reports on C. texanus: one about the content of histamine, acetylcholine, and serotonin in its trichomes [9] and an early short note [10].…”