نتایج جستجو برای: 5 o dirhamnosid 3 butanoat 7 hydroxyflavone

تعداد نتایج: 3176463  

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

2004
Berardina De Carolis Catherine Pelachaud Isabella Poggi Mark Steedman

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Perilla frutescens is an annual herb of the mint family native to East Asia. Polyphenols present in perilla have various structural varieties with large diversity of biological activities. It is direct influence the quality of perilla plant and their potential functions. Some of these products have been studied and proven to be effective source of phenolic antioxidants. The aqueous extract cont...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2008
Mohamed S A Marzouk Magda T Ibrahim Omima R El-Gindi Marwa S Abou Bakr

Chromatographic separation of a 70% aqueous methanol extract (AME) of Pongamia pinnata (Linn.) Pierre (Leguminosae) leaves has led to the isolation of two new isoflavonoid diglycosides, 4'-O-methyl-genistein 7-O-beta-D-rutinoside (2) and 2',5'-dimethoxy-genistein 7-O-beta-D-apiofuranosyl-(1"'-->6")-O-beta-D-glucopyranoside (6), and a new rotenoid, 12a-hydroxy-alpha-toxicarol (5), together with ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم پایه 1391

در این پژوهش، تعدادی ترکیب فسفر-کلر با فرمول های xc(o)nhp(o)cl2 x]=cf3، ccl3، cf2cl و[ch2cl ، 4-ch3-c6h4nhp(o)cl2 ، 4-ch3-c6h4s(o)2nhp(o)cl2 و [4-ch3-c6h4nh]2p(o)cl تهیه و برای سنتز فسفر آمیدهای با فرمول ccl3c(o)nhp(o)y ] [nh(ch2)3nh=y (1) و [nhch2c(ch3)2ch2nh=y] (2)، [h2n(ch2ch3)2][4-ch3-c6h4s(o)2nhp(o)n(ch2ch3)2].h2o (3)، 4-ch3-c6h4nhp(o)[n(ch3)(ch2c6h5)]2 (4)، [4-ch3-c6h4nh]2p(o)op(o)[nhc6h4...

Journal: :Chemistry & biodiversity 2016
Bing-You Yang Jiang-Tao Guo Zu-Yi Li Chang-Fu Wang Zhi-Bin Wang Qiu-Hong Wang Hai-Xue Kuang

Three new lignans (1 - 3), together with four new thymoquinol glycosides (4 - 7), were isolated from 70%-EtOH extract of the rattan stems of Schisandra chinensis. The structures of 1 - 7 were elucidated by detailed spectroscopic analyses, and these new compounds were identified as pinobatol-9-O-β-d-glucopyranoside (1), 1,2,13,14-tetramethoxydibenzocyclooctadiene 3,12-O-β-d-diglucopyranoside (2)...

Journal: :Bioorganic & medicinal chemistry letters 2012
Yasodha Sivasothy A Hamid A Hadi Khalit Mohamad Kok Hoong Leong Halijah Ibrahim Shaida Fariza Sulaiman Kheng Leong Ooi Khalijah Awang

The rhizomes of Zingiber spectabile yielded a new dimeric flavonol glycoside for which the name kaempferol-3-O-(4″-O-acetyl)-α-L-rhamnopyranoside-(I-6,II-8)-kaempferol-3-O-(4″-O-acetyl)-α-L-rhamnopyranoside; spectaflavoside A (1) was proposed, along with kaempferol and its four acetylrhamnosides (2-6), demethoxycurcumin (7) and curcumin (8). The structure of spectaflavoside A was elucidated by ...

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