Flavonol Glycosides from Cassia hirsuta

Kv, Rao; Damu, AG; Jayaprakasam, B.; Gunasekar, Duvvuru

doi:10.1021/np980195c

Cited by 24 publications

(26 citation statements)

References 11 publications

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“…The FAB-MS, UV, 1 H, 13 C NMR data of compound 7 were in a good agreement with those reported for kaempferol-3-O-a-Lrhamnosyl-(1 000 -2 00 )-a-L rhamnoside (Mabry et al, 1970;Rao et al, 1998). This is the first report for the isolation and Phytochemical and biological studies of Carduus pycnocephalus L.…”

Section: Characterisation Of the Isolated Compoundssupporting

confidence: 87%

“…identification of this compound from the genus Carduus and second time in nature; it was previously isolated from Cassia hirsuta (Rao et al, 1998). Compounds 8-10 were identified by comparison of their IR, EI-MS and 1 H NMR, 13 C NMR data with the literatures as lupeol (Ahmad and Rahman, 1994), b-sitosterol and b-sitosterol-3-O-b-D-glucoside (Good and Akihisa, 1997).…”

Section: Characterisation Of the Isolated Compoundsmentioning

confidence: 96%

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Phytochemical and biological studies of Carduus pycnocephalus L.

AL-Shammari

Hаssаn

Al-Youssef

2015

Journal of Saudi Chemical Society

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Seven flavonoidal compounds, apigenin (1), kaempferol-3-O-b-D-glucoside (2), kaempferol-3-O-a-L-rhamnoside (3), kaempferol-7-methoxy-3-O-a-L-rhamnoside (4), diosmetin-7-O-b-D-xylosyl-(1 000 fi6 00 )-b-D-glucopyranoside (5), diosmetin-7-O-a-L-arabinosyl (1 000 fi6 00 )-b-D-glucopyranoside (6), kaempferol-3-O-a-L-rhamnosyl-(1 000 fi2 00 )-a-L-rhamnoside (7), in addition to lupeol (8), b-sitosterol (9) and b-sitosterol-3-O-b-D-glucoside (10) were isolated from the aerial parts of Carduus pycnocephalus L. The structures of the isolated compounds were established by UV, IR, FAB-MS, ESI-MS, EI-MS, 1D and 2D NMR spectroscopic methods. Compounds 1, 2, and 4 were reported for the first time from C. pycnocephalus and compounds 5 and 7 were first reported from the genus Carduus. Anti-inflammatory, antispasmodic and hypotensive activities were assessed for all extracts which showed variable activities.

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Section: Characterisation Of the Isolated Compoundssupporting

confidence: 87%

Section: Characterisation Of the Isolated Compoundsmentioning

confidence: 96%

Phytochemical and biological studies of Carduus pycnocephalus L.

AL-Shammari

Hаssаn

Al-Youssef

2015

Journal of Saudi Chemical Society

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“…A new flavonol glycoside [kaempferol 3-O-α-L-rhamnopyranosyl (1-2)-α-L-rhamnopyranoside] has been separated from the flowers of C. hirsuta along with two known flavonol glycosides (kaempferol 3-O-rutinoside and rutin) [12]. Luximon-Ramma et al [13] report the presence of total phenolics (9-54 mg gallic acid equivalent/g dry weight), total flavonoids (3-14 mg quercetin equivalent/g dry weight) and total proanthocyanidins (2-20 mg cyanidin chloride equivalent/g dry weight) in different parts of the related species, C. fistula.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Potential and Health Relevant Functionality of Traditionally Processed Cassia hirsuta L. Seeds: An Indian Underutilized Food Legume

Vadivel

Nandety

Biesalski

2011

Plant Foods Hum Nutr

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The methanolic extract of Cassia hirsuta L. seed materials, an underutilized food legume collected from India, was analyzed for antioxidant activity and health relevant functionality. The methanolic extract of raw seeds contained a total free phenolic content of 15.82 ± 1.69 g catechin equivalent/100 g extract DM. Encouraging levels of ferric reducing/antioxidant power (FRAP, 1,446 mmol Fe[II]/mg extract), inhibition of ß-carotene degradation (48.81%) and scavenging activity against DPPH (64.40%) and superoxide (43.78%) radicals were exhibited by the raw samples. Further, 83.11% of α-amylase and 62.79% of α-glucosidase enzyme inhibition characteristics under in vitro starch digestion bioassay were also recorded. Sprouting + oil-frying caused an apparent increase on the total free phenolic content and a significant improvement in the antioxidant and free radical scavenging capacity of methanolic extract of C. hirsuta seeds, while soaking + cooking as well as open-pan roasting treatments showed diminishing effects. The analysis of the phenolic profile revealed the presence of gallic acid, p-coumaric acid and (+)-catechin in the methanolic extract of these seeds.

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“…These data suggested that 1 was a substituted labdanetype diterpene. 10 The two sugar moieties were identified as glucose (Glc) and rhamnose (Rha) on the basis of characteristic 13 11 In the 1 H NMR spectrum, anomeric protons at δ 4.42 (d, 7.6) and 5.37 (s) and a typical rhamnose methyl signal (δ 1.21, d, 6.0) were observed. The glucose had a -configuration and rhamnose had an R-configuration on the basis of the magnitude of the coupling constants of the anomeric protons, J ) 7.6 and 0 Hz, respectively.…”

Section: Resultsmentioning

confidence: 99%

Labdane Diterpenoid Glycosides from Alpinia densespicata and Their Nitric Oxide Inhibitory Activities in Macrophages

Hsiao

Zhang

et al. 2009

J. Nat. Prod.

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Four new labdane diterpene glycosides (1-4) named alpindenosides A, B, C, and D, two new norditerpene glycosides (5, 6) named noralpindenosides A and B, and three known flavonoid glycosides (7-9) have been isolated from the stems of Alpinia densespicata. Structural elucidation of compounds 1-6 was based on spectroscopic data. Compounds 1-9 all exhibited moderate NO inhibitory activities, whereas they were noncytotoxic at 20 microM against several human tumor cell lines.

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Flavonol Glycosides from Cassia hirsuta

Cited by 24 publications

References 11 publications

Phytochemical and biological studies of Carduus pycnocephalus L.

Phytochemical and biological studies of Carduus pycnocephalus L.

Antioxidant Potential and Health Relevant Functionality of Traditionally Processed Cassia hirsuta L. Seeds: An Indian Underutilized Food Legume

Labdane Diterpenoid Glycosides from Alpinia densespicata and Their Nitric Oxide Inhibitory Activities in Macrophages

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