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KMID : 0043320100330020203
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Archives of Pharmacal Research
2010 Volume.33 No. 2 p.203 ~ p.208
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Two New C-Glucosyl Benzoic Acids and Flavonoids from Mallotus nanus and Their Antioxidant Activity
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Kim Young-Ho
Kiem Phan Van
Mai Nguyen-Thi
Minh Chau Van
Khoi Nguyen-Huu
Dang Nguyen-Hai
Thao Nguyen Phuong
Cuong Nguyen Xuan
Nam Nguyen Hoai
Nhiem Nguyen Xuan
Quetin-Leclercq Joelle
Heyden Yvan-Vander
Kim Gyo-Nam
Jang Hae-Dong
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Abstract
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Two new 2-C-β-D-glucopyranosyl benzoic acid derivatives named mallonanosides A (1) and B (2) were isolated from the methanolic extract of the leaves of Mallotus nanus along with five known flavonoids, kaempferin (3), juglanin (4), quercitrin (5), myricitrin (6), and rhoifolin (7). Their structures were established on the basis of spectral and chemical evidence. Their antioxidant activities were shown to depend on the number of hydroxyl groups, and the location and species of sugar moiety.
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KEYWORD
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Mallotus nanus, C-glucosyl benzoic acid, Mallonanoside A, Mallonanoside B, Oxygen radical absorbance capacity
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