New flavonoid chemotypes from Asplenium normale (Aspleniaceae) in Malaysia

Tsukasa Iwashina and Sadamu Matsumoto and Takehisa Nakamura and Goro Kokubugata and Monica Suleiman and Idoris M. Said (2008) New flavonoid chemotypes from Asplenium normale (Aspleniaceae) in Malaysia. Memoirs of the National Museum of Nature and Science, 45. pp. 111-119. ISSN 0374-8782

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Seven Asplenium normale individuals in Malaysia were surveyed for flavonoid com¬pounds. They were divided into two chemotypes, H- and I-types. The flavonoids were isolated by various chromatography and identified by TLC, HPLC, UV spectroscopic, LC-MS and NMR sur¬veys. Two flavone O-glycosides, apigenin 7-O-rhamnosyl-(1→4)-rhamnoside (1) and apigenin 7- O-rhamnosyl-(1→4)-rhamnoside-4'-O-rhamnoside (2), and two flavone C-glycosides, vicenin-2 (6) and lucenin-2 (7), were contained in one chemotype (H-type). On the other hand, two flavonol O-glycosides, kaempferol 3-O-glucosylrhamnoside (3) and kaempferol 3,4'-di-O-glycoside (4) and a flavone O-glycoside, genkwanin 4'-O-glucosyl-(1→3)-rhamnoside (5), were found from another chemotype (I-type) together with 6 and 7. In cases of Japanese Asplenium normale and related species, seven chemotypes have been reported. However, their chemotypes did not include flavonol O-glycosides and apigenin trirhamnoside. Apigenin 7-O-rhamnosyl-(1→4)-rhamnoside (1) and apigenin 7-O-rhamnosyl-(1→4)-rhamnoside-4'-O-rhamnoside (2) were reported in nature for the first time.

Item Type: Article
Uncontrolled Keywords: Apigenin O-glycosides , Kaempferol O-glycosides , Flavonoids , Asplenium Normale , Malaysia , Aspleniaceae , Chemotypes , Chemotaxonomy
Subjects: Q Science > QH Natural history
Q Science > QK Botany
Divisions: INSTITUTE > Institute for Tropical Biology and Conservation
Depositing User: SAFRUDIN BIN DARUN -
Date Deposited: 01 Jul 2021 08:55
Last Modified: 01 Jul 2021 08:55

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