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Anthocyanins and flavonols from the blue flowers of six Meconopsis species in Bhutan
Publication date: October 2019Source: Biochemical Systematics and Ecology, Volume 86Author(s): Tsukasa Iwashina, Kazutaka Yokoyama, Rinchen Yangzom, Takayuki Mizuno, Hari Prasad Devkota, Yoshinori Murai, Kencho Dorji, Choki Wangmo, Choki GyeltshenAbstractBlue flowers of six Bhutani Meconopsis species, M. bhutanica, M. bella, M. horridula, M. simplicifolia, M. primulina and M. polygonoides, were surveyed for anthocyanins and other flavonoids. Four anthocyanins were isolated and identified as cyanidin 3-O-sambubioside-7-O-glucoside (1), cyanidin 3-O-[xylosyl-(1 → 2)-(6″-malonylglucoside)]-7-O-glucoside (2), cyanidin ...
Source: Biochemical Systematics and Ecology - August 29, 2019 Category: Biochemistry Source Type: research

Cecropia telenitida Cuatrec. (Urticaceae: Cecropieae): Phytochemical diversity, chemophenetic implications and new records from Central America
Publication date: October 2019Source: Biochemical Systematics and Ecology, Volume 86Author(s): Orlando O. Ortiz, Andrés Rivera-Mondragón, Luc Pieters, Kenn Foubert, Catherina Caballero-GeorgeAbstractThe Neotropical genus Cecropia is the largest genus of Cecropieae in the Urticaceae family with 61 described species. For many years, the taxonomic study of Cecropia has been based on morphological and anatomical data. However, recent studies have shown that chemical entities present in Cecropia can be used to establish differences between species providing important additional support on its taxonomic classification. The goa...
Source: Biochemical Systematics and Ecology - August 29, 2019 Category: Biochemistry Source Type: research

Chemical constituents from Bupleurum chinese and their chemotaxonomic significance
Publication date: October 2019Source: Biochemical Systematics and Ecology, Volume 86Author(s): Danqi Li, Dandan Yue, Da Liu, Xuegui Liu, Shaojiang SongAbstractA phytochemical investigation of the roots of Bupleurum chinese DC. led to the isolation of eighteen compounds, including three chromones (1–3), seven flavonoids (4–10), one dihydrochalcone (11), two phenylpropanoid glycosides (12–13), one lignan (14), three sterols (15–17) and one stilbenoid (18). Their structures were elucidated on the basis of NMR spectroscopic analysis and comparison with literature data. Compounds 6–7, 11–14 and 18 were firstly repor...
Source: Biochemical Systematics and Ecology - August 28, 2019 Category: Biochemistry Source Type: research

Two pairs of alkaloid enantiomers from Ganoderma luteomarginatum
Publication date: October 2019Source: Biochemical Systematics and Ecology, Volume 86Author(s): Xiao-Cui Li, Fei Liu, Hai-Guo Su, Li Guo, Qin-Mei Zhou, Yuan-Jin Huang, Cheng Peng, Liang XiongAbstractA pair of new alkaloid enantiomers [(+)- and (−)-1] as well as a pair of known enantiomeric analogues [(+)- and (−)-2] were isolated from the fruiting bodies of Ganoderma luteomarginatum. Their planar structures were determined by extensive spectroscopic analyses. The absolute configurations were established by comparison of the experimental and calculated electronic circular dichroism (ECD) or comparison of the experimental...
Source: Biochemical Systematics and Ecology - August 21, 2019 Category: Biochemistry Source Type: research

Characteristic lindenane sesquiterpenoid dimers and labdane diterpenoids from Chloranthus serratus
Publication date: October 2019Source: Biochemical Systematics and Ecology, Volume 86Author(s): Fangyou Chen, Hongtao Li, Jie Chen, Yongming LuoAbstractChemical investigation on the roots of Chloranthus serratus (Chloranthaceae) afforded 11 terpenoids, including four lindenane-type sesquiterpenoid dimers (1–4), and seven labdane diterpenoids (5–11). The structures of these terpenoids were established by spectroscopic analysis (MS, 1H, and 13C NMR). Compounds 4–11 were isolated from C. serratus for the first time. The chemotaxonomic significance of the isolated compounds was summarized herein.Graphical abstract (Source...
Source: Biochemical Systematics and Ecology - August 21, 2019 Category: Biochemistry Source Type: research